{{translation|'''Killer B'''|キラービー|Kirābī|viz=Killer Bee}} is one of the major supporting characters in the series, a [[shinobi]] from [[Kumogakure]] and the [[jinchūriki]] of [[Gyūki]], the Eight-Tails.

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{{translation|'''Killer B'''|キラービー|Kirābī|viz=Killer Bee}} is a [[shinobi]] from [[Kumogakure]].He is the most recent [[jinchūriki]] of the [[Eight-Tails]], though, unlike his predecessors, he is able to befriend it and hone its power for Kumo's benefit. Despite being responsible for the village's protection, B aspires to be the world's greatest rapper.

== Background ==

== Background ==

[[File:A and B brothers.png|thumb|left|B and A become brothers.]]

[[File:A and B brothers.png|thumb|left|B and A become brothers.]]

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At a young age, B along with several other children were gathered in order to select a tag partner for [[A]]. Out of all the children gathered, B was the only person able to successfully perform the [[Double Lariat]] with A. As such he was given the name "B", and A stated they would be brothers from that day on.<ref>''Naruto'' chapter 541, pages 17-20</ref> Since the age of five, B has been best friends with [[Motoi]], whom he always greeted with a fist bump. After [[A's cousin]], the jinchūriki of [[Gyūki]] lost control and killed [[Motoi's father]] along with seven other ninja on that day, B was chosen as its next [[jinchūriki]].<ref>''Naruto'' chapter 494, pages 4-6</ref> Soon afterwards, B suffered from similar prejudices against jinchūriki, not too different from that the villagers of [[Konohagakure]] and [[Sunagakure]] had against [[Naruto Uzumaki]] and [[Gaara]] respectively. However, he kept smiling and pushed himself to be the best jinchūriki that he could be, so that his brother wouldn't be hurt politically as the Fourth Raikage.<ref>''Naruto'' chapter 494, pages 9-10</ref>

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At a young age, B along with several other children were gathered in order to select a tag partner for [[Fourth Raikage|A]]. Out of all the children gathered, B was the only person able to successfully perform the [[Lightning Release: Double Lariat]] with A. As such he was given the name "B", and A stated they would be brothers from that day on.<ref>Chapter 541, pages 17-20</ref> Since the age of five, B has been best friends with [[Motoi]], whom he always greeted with a fist bump. After [[Blue B|A's cousin]], the jinchūriki of [[Gyūki]] lost control and killed [[Furui|Motoi's father]] along with seven other ninja on that day, B was chosen as its next [[jinchūriki]].<ref>Chapter 494, pages 4-6</ref> Soon afterwards, B suffered from similar prejudices against jinchūriki, not too different from that the villagers of [[Konohagakure]] and [[Sunagakure]] had against [[Naruto Uzumaki]] and [[Gaara]] respectively. However, he kept smiling and pushed himself to be the best jinchūriki that he could be, so that his brother wouldn't be hurt politically as the Fourth Raikage.<ref>Chapter 494, pages 9-10</ref>

After his father's death, Motoi tried to kill B, believing it would also kill Gyūki and avenge his father, but B disarmed him easily, and despite the attempt on his life, bore him no ill will, which led Motoi to not speak to B for thirty years out of shame.<ref>''Naruto'' chapter 494, pages 7-9</ref> B would later train with his brother on an [[Island Turtle|island in the Land of Lightning]], where there he would find the [[Falls of Truth]]. There he learned how to control Gyūki in a amazingly short period of time. Some time after his training, B, alongside A, and other Kumo shinobi confronted [[Minato Namikaze]] and his small squad. When Minato moved to counter A's attack, B used a tentacle to push A out of the way, causing shock to the Konoha shinobi that he was Gyūki's jinchūriki. From this encounter Minato would come to have much respect for B and his abilities.<ref>''Naruto'' chapter 542, pages 12-17</ref><ref>''Naruto'' chapter 543, pages 1-3</ref> Some time since then, much like Naruto, B has become beloved in Kumo as the village's hero, or, as Motoi called him, the "Hero of Heroes".<ref>''Naruto'' chapter 492, page 5</ref>

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After his father's death, Motoi tried to kill B, believing that B's death would also kill Gyūki and avenge his late father, but B disarmed him easily, and despite the attempt on his life, bore him no ill will, which led Motoi to not speak to B for thirty years out of shame.<ref>Chapter 494, pages 7-9</ref> B would later train with his brother on an [[Island Turtle|island in the Land of Lightning]], where there he would find the [[Falls of Truth]]. There he learned how to control Gyūki in a amazingly short period of time. Some time after his training, B, alongside A, and other Kumo shinobi confronted [[Minato Namikaze]] and his small squad. When Minato moved to counter A's attack, B used a tentacle to push A out of the way, causing shock to the Konoha shinobi that he was Gyūki's jinchūriki. From this encounter Minato would come to have much respect for B and his abilities.<ref>Chapter 542, pages 12-17</ref><ref>Chapter 543, pages 1-3</ref> Some time since then, much like Naruto, B has become beloved in Kumo as the village's hero, or, as Motoi called him, the "Hero of Heroes".<ref>Chapter 492, page 5</ref>

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When A became the Raikage, he forbade B from fully transforming into the Eight-Tails and restricted him from leaving the village, saying instead that he would become the guardian of the village and attack from within its walls.<ref name="C543 P 13">''Naruto'' chapter 543, page 13</ref>

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When A became the Raikage, he forbade B from fully transforming into the Eight-Tails and restricted him from leaving the village, saying instead that he would become the guardian of the village and attack from within its walls, to protect him from meeting the same fate as his adoptive father.<ref name="C543 P 13">Chapter 543, page 13</ref> Sometime later, when B learned from pestering [[Darui]] that Konoha and Suna were hosting together an impromptu Chūnin Exams, B saw this as an opportunity to give show for the attenders. A however anticipated his young bother's actions and had Darui and [[C]] stop him.<ref>''Shippūden'' episode 394</ref>

== Personality ==

== Personality ==

[[File:Bee and rhyme book.png|thumb|left|B writing in his rhyme book during battle.]]

[[File:Bee and rhyme book.png|thumb|left|B writing in his rhyme book during battle.]]

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Killer B is very proud of his own power and also very proud of who he is. Like [[Naruto Uzumaki]], who has great overconfidence, Killer B can be quite cocky and stubborn, especially in terms of his own strength, demanding respect from others and asks to be called {{translation|"Lord Jinchūriki"|人柱力様|Jinchūriki-sama}} and his tailed beast be called {{translation|"Lord Eight-Tails"|八尾様|Hachibi-sama}}. B has a special way of expressing his pride through song, more specifically in rap-style and tends to use {{translation|"Bakayarō! Konoyarō!"|「バカヤロー!コノヤロー!}} when referring or speaking to others. He will even write his rhymes in the middle of a fight, or during an important meeting, even if they are no good, which is usually the case. This sometimes causes the people around him to become greatly annoyed by him. B doesn't respect anyone who would make fun of rap or his lyrics.

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Killer B is very proud of his own power and also very proud of who he is. Like [[Naruto Uzumaki]], who has great overconfidence, Killer B can be quite cocky and stubborn, especially in terms of his own strength, demanding respect from others and asks to be called {{translation|"Lord Jinchūriki"|人柱力様|Jinchūriki-sama}} and his tailed beast be called {{translation|"Lord Eight-Tails"|八尾様|Hachibi-sama}}. B has a special way of expressing his pride through song, more specifically in rap-style and tends to use {{translation|"Bakayarō! Konoyarō!"|「バカヤロー!コノヤロー!}} when referring or speaking to others. He will even write his rhymes in the middle of a fight, or during an important meeting, even if they are no good, which is usually the case. He gets his rapping ideas from his opponents in battle. This sometimes causes the people around him to become greatly annoyed by him. B thinks very highly of his rapping skills and doesn't respect anyone who would make fun of rap or his lyrics.

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The Raikage has noted that Killer B is not the type of person to work with the strategies created by people and that he would only bring chaos into a battlefield;<ref>''Naruto'' chapter 468, page 6</ref> in his youth he was already seen completing missions, that were supposed to be assigned for both him and his brother, without A's knowledge. The Raikage also notes that he is the only being that B will listen to, as he is able to keep him in check. Despite all this, B knows talent when he sees it, and respects those with it. The primary example is his fellow Kumo jinchūriki, [[Yugito Nii]], who he looked up to for her extreme skills.<ref>''Naruto'' - Second Artbook</ref> He had also praised Sasuke after their fight, stating he was one of the strongest shinobi he had ever fought. B has a very close relationship with his older brother, the Raikage. According to [[Motoi]], the reason behind him becoming a jinchūriki was for the sake of his brother, even if it meant being shunned by the villagers. He didn't complain, and was always cheerful and determined.

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The Raikage has noted that Killer B is not the type of person to work with the strategies created by people and that he would only bring chaos into a battlefield;<ref>Chapter 468, page 6</ref> in his youth he was already seen completing missions, that were supposed to be assigned for both him and his brother, without A's knowledge. The Raikage also notes that he is the only being that B will listen to, as he is able to keep him in check. Despite all this, B knows talent when he sees it, and respects those with it. The primary example is his fellow Kumo jinchūriki, [[Yugito Nii]], who he looked up to for her extreme skills.<ref>''Naruto'' - Second Artbook</ref> He had also praised [[Sasuke Uchiha]] after their fight, stating he was one of the strongest shinobi he had ever fought. B has a very close relationship with his older brother, the Raikage. According to [[Motoi]], the reason behind him becoming a jinchūriki was for the sake of his brother, even if it meant being shunned by the villagers. He didn't complain, and was always cheerful and determined.

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[[File:Fistbumping.png|thumb|B fist bumping.]]

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[[File:Bee'sPromise.png|thumb|B fist bumping.]]

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Due to the fact that he was confined to the village very soon after his brother assumed office and made the village's guardian,<ref name="C543 P 13"/> B desperately wished for a vacation and was even ready to fake his capture for one. When the [[Fourth Raikage]], [[Darui]] and [[C]] learned that B was not captured by Akatsuki, they immediately guessed his intentions and were not surprised by it, though they were very displeased. This lead to him receiving his brother's "[[Iron Claw]]" as punishment. B also tends to [[Wikipedia:Fist bump|fist bump]] with others. This ties into his rapper personality and also serves as a means of communication of sorts, with others without the need to speak.

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Due to the fact that he was confined to the village very soon after his brother assumed office and made the village's guardian,<ref name="C543 P 13"/> B desperately wished for a vacation and was even ready to fake his capture for one. When the [[Fourth Raikage]], [[Darui]] and [[C]] learned that B was not captured by Akatsuki, they immediately guessed his intentions and were not surprised by it, though they were very displeased. This lead to him receiving his brother's "[[Iron Claw]]" as punishment. B also tends to [[Wikipedia:Fist bump|fist bump]] with others. This ties into his rapper personality and also serves as a means of communication of sorts, with others without the need to speak.

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However, when someone close to him is in danger, Killer B has no qualms about putting himself at risk to save them, if necessary, as seen when he prioritised the safety of his singing master Sabu and his pet, [[Ponta]] over confronting Kisame head-on when the Akatsuki confronted his entourage. This caring nature differentiates him from a typical jinchūriki, most of whom are cynical and uncaring towards others due to their circumstances. However, it was hinted that his past as a jinchūriki may not have been unlike Naruto's, since Motoi claimed that being a fellow jinchūriki, B understands what Naruto went through. He has a casual relationship with Gyūki, frequently engaging in friendly conversation with it, even sitting upon its nose when not in combat. He was also completely unaffected by Naruto's [[Harem Technique]], resisting lustful advances and even appearing indifferent.<ref>''Naruto'' chapter 492, pages 10-11</ref> However, he is not completely unaffected by such things, as he noticed Tsunade's rather sizeable cleavage, which his brother reprimanded him for<ref>''Naruto'' chapter 540, pages 16-17</ref> and he later stared at Yugito's own sizeable bust when it was shown during his fight with Tobi's Six Paths.<ref>''Naruto'' chapter 565, pages 10-11</ref>

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However, when someone close to him is in danger, Killer B has no qualms about putting himself at risk to save them, if necessary, as seen when he prioritised the safety of his singing master Sabu and his pet, [[Ponta]] over confronting Kisame head-on when the Akatsuki confronted his entourage. This caring nature differentiates him from a typical jinchūriki, most of whom are cynical and uncaring towards others due to their circumstances. However, it was hinted that his past as a jinchūriki may not have been unlike Naruto's, since Motoi claimed that being a fellow jinchūriki, B understands what Naruto went through. He has a casual relationship with Gyūki, frequently engaging in friendly conversation with it, even sitting upon its nose when not in combat. He was also completely unaffected by Naruto's [[Harem Technique]], resisting lustful advances and even appearing indifferent.<ref>Chapter 492, pages 10-11</ref> However, he is not completely unaffected by such things, as he noticed Tsunade's chest, which his brother reprimanded him for<ref>Chapter 540, pages 16-17</ref> and he later stared at Yugito's own chest when it was shown during his fight with Tobi's Six Paths.<ref>Chapter 565, pages 10-11</ref> This is later explained as having a preference toward older women, at one point confessing it during the fight against Tobi, much to his tailed beast's surprise and chagrin.

B is also very kind and compassionate, having befriended all the giant animals on the [[Island Turtle]] which may indicate that he has a liking for animals, as well as never expressing any ill will towards Motoi who tried to take his life, nor against the villagers who used to shun him.

B is also very kind and compassionate, having befriended all the giant animals on the [[Island Turtle]] which may indicate that he has a liking for animals, as well as never expressing any ill will towards Motoi who tried to take his life, nor against the villagers who used to shun him.

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B is shown to have grown attached to Naruto during their time together. B even wanted to visit Naruto in Konoha after the latter became Hokage even though Gyūki talked him out of it because Naruto has little free time on his hands, unlike B.

== Appearance ==

== Appearance ==

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[[File:B adolescent.png|thumb|left|A young Killer B.]]

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[[File:B body.png|thumb|left|Killer B's full appearance.]]

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Killer B has dark skin and a muscular build, as well as white hair (blond in the anime) and a goatee. On his right shoulder, he has a tattoo of the kanji for {{translation|"iron"|鉄|tetsu}}, which is the [[Iron Armour Seal]] that was used to seal Gyūki into him, and on his left cheek, he has a tattoo of a bull's horn (correspondingly, the Gyūki has horns like a bull, and the left one is partially missing).<ref>''Naruto'' chapter 408, page 5</ref> His top lip also has a slightly darker hue than his bottom one.

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Killer B has dark skin and a muscular build, as well as white hair (blond in the anime) and a goatee. On his right shoulder, he has a tattoo of the kanji for {{translation|"iron"|鉄|tetsu}}, which is the [[Iron Armour Seal]] that was used to seal Gyūki into him, and on his left cheek, he has a tattoo of a bull's horn (correspondingly, Gyūki has horns like a bull, and the left one is partially missing).<ref>Chapter 408, page 5</ref> His top lip also has a slightly darker hue than his bottom one.

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[[File:WhiteFlak Jacket.jpg|thumb|KillerB.]]

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Killer B wears oval shaped sunglasses and a white-coloured [[foreheadprotector]]. He also has his village's standard one-strap-over-one-shoulder [[flak jacket]], and a long, red rope belt tied around his waist, the standard Kumo hand and shin guards, shinobi sandals, and a white scarf around his neck. He originally carried seven swords on his back, but now he only carries two swords on his back and stores the rest inside Samehada.

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Killer B wears oval shaped sunglasses and a white coloured [[forehead protector]]. He also has his village's standard one-strap-over-one-shoulder [[flak jacket]], and a long, red rope belt tied around his waist, the standard Kumo hand and shin guards, shinobi sandals, and a white scarf around his neck. He originally carried seven swords on his back, but now he only carries two swords on his back and stores the rest inside Samehada.

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[[File:B adolescent.png|thumb|right|A young Killer B.]]

As a child, B's hair was much shaggier and he wore a simple suit along with his trademark sunglasses and scarf along with Kumo-nin shin-guards. In his adolescent years, his hair grew much longer and he wore it in a stylised, combed-back manner. In these years he donned the standard uniform of the Kumo-nin inclusive of shirt and started carrying two [[Supervibrato Lightning Release Swords]]. As he got older, he started wearing his [[forehead protector]] like a bandanna.

As a child, B's hair was much shaggier and he wore a simple suit along with his trademark sunglasses and scarf along with Kumo-nin shin-guards. In his adolescent years, his hair grew much longer and he wore it in a stylised, combed-back manner. In these years he donned the standard uniform of the Kumo-nin inclusive of shirt and started carrying two [[Supervibrato Lightning Release Swords]]. As he got older, he started wearing his [[forehead protector]] like a bandanna.

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Years after the Fourth Shinobi World War, B's attire consisted of an long, dark, sleeveless vest that left his abdomen exposed along with baggy white pants held up by a cord and standard shinobi sandals. His hair had also gotten noticeably longer.

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== Abilities ==

== Abilities ==

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As the guardian of Kumo and Gyūki's [[jinchūriki]], Killer B is an extremely powerful ninja, capable of overwhelming the entire team [[Taka]] single-handedly, and has had his skills praised by several Kumo-nin, including his older brother. Even as a child, B showed promising skill, being able to accomplish missions all on his own, despite the fact that they should have been executed as a team, with A as his partner.<ref>''Naruto'' chapter 542, page 1</ref> Tobi claimed that he is the perfect jinchūriki,<ref>''Naruto'' chapter 467, page 18</ref> a statement later reaffirmed by Kisame.<ref>''Naruto'' chapter 472, page 7</ref> Even Minato Namikaze praised B'sabilities, stating that he was more like a ninja with a great power than simply a jinchūriki.<ref>''Naruto'' chapter 543, page 3</ref> During his time on an island where he trained to control Gyūki's power, B tamed almost all of the island's beasts.<ref>''Naruto'' chapter 492, page 4</ref> A claimed that B had more talent than he did, which was shown when he overpowered his elder brother in a direct[[Lariat]] clash.<ref>''Naruto'' chapter 542, page 18</ref><ref>''Naruto'' chapter 543, page 16</ref> Using Gyūki's power, despite a past injury, he was able to hold his own against two tailed beasts while helping Naruto fight in the latter's [[Tailed Beast Mode]].<ref>''Naruto'' chapter 571, page 9</ref>

As the guardian of Kumo and a fully-realised [[jinchūriki]], Killer B is an extremely powerful shinobi, capable of overwhelming the entire team [[Taka]] single-handedly, and has had his skills praised by several Kumo-nin, including his older brother. Even as a child, B showed promising skill, being able to accomplish missions single-handedly, despite the fact that they should have been executed as a team, with A as his partner.<ref>Chapter 542, page 1</ref> During his time on an island where he trained to control Gyūki's power, B tamed almost all of the island's beasts.<ref>Chapter 492, page 4</ref> A claimed that B had more talent than he did, which was shown when he overpowered his elder brother in a direct [[Lightning Release: Lariat]] clash.<ref>Chapter 542, page 18</ref><ref>Chapter 543, page 16</ref> Even Minato praised B's abilities, stating that he was more like a ninja with a great power than simply a jinchūriki.<ref>Chapter 543, page 3</ref>

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{{-L}}

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Despitehisseeminglycarefree nature, Killer B possesses sharp wit, as shown when he used the [[Body Replacement Technique]] to switch places with Gyūki's tentacle so he could escape [[Sasuke Uchiha]]'s [[Amaterasu]]. He also has the ability to interpret someone's "heart" as well as transmit his own feelings merely through touching someone (which is usually done through a fist bump). This ability was first demonstrated when he was training with Naruto in the [[Tailed Beast Temple]], again when Iruka expressed his wishes to protect Naruto to him<ref>''Naruto'' chapter 536, page 2</ref> and when he stopped his brother from attacking Naruto.<ref>''Naruto'' chapter 541, page 14</ref> B is also quite knowledgeable in fūinjutsu, able to distinguish between the superiority of the [[Four Symbols Seal]] to his own [[Iron Armour Seal]]<ref>''Naruto'' chapter 496, page 7</ref> as well as possessing a [[Sealing Technique: Octopus Hold|unique style of fūinjutsu]].<ref>''Naruto'' chapter 566, page 7</ref>

As a jinchūriki of Gyūki, B has very large and strong levels of chakra, enough to make [[Samehada]] get very excited and betray Kisame. B is one of the few people to have achieved full [[Tailed Beast Control|control]] over a tailed beast as noted by [[Danzō Shimura]],<ref>Chapter 458, page 3</ref> achieving this control with ease at the [[Falls of Truth]], becoming a perfect jinchūriki.<ref>Chapter 467, page 18</ref><ref>Chapter 472, page 7</ref> Like his fellow Kumo-nin, Yugito, B can transform into his tailed beast with great ease in mere seconds and maintain [[Tailed Beast Control#Jinchūriki|control]] even in this fully released state. B is the only known, as well as living jinchūriki who can transform at will and remain in his [[Tailed Beast Mode|full tailed-beast form]] indefinitely. Because he has a strong relationship with Gyūki, it can aid B in battle, disturbing his chakra to dispel even [[genjutsu]] from a [[Mangekyō Sharingan]], or simply grant B more of its own chakra should B run out himself. Even genjutsu of [[Itachi Uchiha]]'s calibre are easily broken with this method, with B being able to handily counter attack. This makes B's "control" over Gyūki more of a willing partnership than actual dominance. Despite being forbidden from transforming by [[A (Fourth Raikage)|his brother]], B disregards this due to his undeniable control, either when training or fighting formidable opponents.

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===Taijutsu===

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Likeotherjinchūriki, B has the ability to create a chakra cloak by drawing on part of his demon's power, supplementing his own speed and strength. While in Tailed Beast Mode, he can create a [[Tailed Beast Ball]], firing one many times his own size as a long-stretching continuous beam, or even [[Continuous Tailed Beast Balls|multiple standard-sized balls]]. B can spin to summon up a [[Tailed Beast Eight Twists|great force of wind]] that can destroy an entire forest with ease. He has shown immense durability using Gyūki's power, able to withstand being [[Amaterasu|burned]] [[Leech Gap|multiple]] [[Flower–Fruit Mountain|times]], continue fighting after being [[Horn Breaking|gored]], and even survive his own Tailed Beast Ball.<ref>Chapter 611, page 3</ref> B can also regenerate any of Gyūki's tentacles if they are lost; this ability, however, does not extend to its horns; one of which was cut off by A.

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[[File:Lariat.PNG|thumb|right|B's signature Lariat.]]

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B has immense physical strength and combat prowess, capable of fighting on equal ground with all three male members of [[Taka]] at once, despite all three being dangerous fighters, while still holding back, as well as winning a sumō match against a [[Kintoki|giant bear]]. Even as a young boy, he was the the only person to successfully perform a [[Double Lariat]] with A, allowing him to become the future Raikage's tag-team partner.<ref>''Naruto'' chapter 541, pages 18-19</ref> During the Fourth Shinobi World War, it was seen that B's [[Lariat]] is stronger than that of his brother's, not even needing Gyūki's chakra to overpower him despite A being clad in his lightning armour.<ref>''Naruto'' chapter 543, page 17</ref> He has shown incredibly fast reflexes, enough to intercept [[Minato Namikaze]]'s [[Flying Thunder God Kunai|kunai]] with one of Gyūki's tentacles<ref>''Naruto'' chapter 542, page 16</ref>, as well as being able to quickly react to [[Sasuke Uchiha]] attacking him at close range and block and repel him with a single move. B is also immensely fast as when [[Jūgo]] attacked him from behind, B was able to instantly dodge his attack and make it to another mountain before Taka even saw he was gone, requiring [[Karin]] to locate him.

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B is also incredibly durable in battle, having received a solid kick to the neck from [[Sasuke Uchiha]] only to drop his sword and begin writing lyrics, escaping unscathed after being hit by the electricity of Sasuke's [[Chidori]], and blasted from behind with a [[Piston Fist: Style One|powerful punch]] from Jūgo. He could take one of A's [[Lariat]]s straight to the chest with no visible damage.<ref>''Naruto'' chapter 543, pages 16-17</ref> Killer B hasafighting style which is similar to thatof the Raikage's because they both use wrestling moves instead of standard taijutsu. He supplements the speed and power of his taijutsu with his tailed beast's cloak.

B's skill with partial transformations is such that he can quickly form all eight tentacles on his back without a cloak, allowing him to intercept fast opponents,<ref>Chapter 541 page 15</ref> or have them burrow through the ground and catch an opponent off guard.<ref name="C549 P 13">Chapter 549, page 13</ref> His dexterity with these tentacles is able to stack and balance various blocks perfectly.<ref>Chapter 515, pages 6-7</ref> B can transform one of his arms into that of Gyūki's to use for various purposes such as throwing fellow ninja a long distance away or blocking attacks.<ref>Chapter 506, page 7</ref><ref name="C549 P 13" /><ref>Chapter 506, pages 7-8</ref> Similar to how other jinchūriki obtain physical traits from their inner beast, B is able to produce [[Ink Creation|ink]] from his mouth, which he mainly uses to write lyrics when he is lacking regular writing tools or to blind his opponent. This ink can be used in a more solid form to make [[Ink Clone Technique|ink clones]] which immobilise his enemies through wrestling locks. After the opponent is captured, the clones proceed to trap and [[Sealing Technique: Octopus Hold|seal]] them.

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===Kenjutsu===

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Afterthe[[Outer Path: Samsara of Heavenly Life Technique|full resurrection]] of [[Madara Uchiha]], the legendary Uchiha successfully extracted Gyūki from B. Despite this, B was able to survive the process by severing one of his partner's tentacles and attaching himself to it, using its chakra as a medium to sustain his life. While unknown how much of B's jinchūriki powers remained at the time, Gyūki was later resealed inside B undoing any problems.

While originally only carrying two swords when he was young, B has developed his [[Kenjutsu|swordplay]] to an incredible level. Possessing a [[Seven Swords Dance|unique fighting style]], B holds his seven blades in between the joints of his arms (left armpit, both elbows), right leg, stomach, the right side of his neck, and in his mouth. As strange as it appears, B is very skilled with this. Because of the unpredictability of his movements, his opponents are easily overwhelmed with all of the varying swings, giving him great versatility very similar to hip-hop dance. When he finds an opening, B can impale his opponent with most of his swords quickly and simultaneously.

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NeitherSuigetsuHōzukinor Sasuke Uchiha, both highly trained swordsmen with the latter also being a Sharingan master, could read his swordplay. He is capable of cutting through almost anything when he flows his lightning chakra through his blades. B can also use these blades as mid-range projectiles. By covering himself with Gyūki's chakra, he creates an "[[Lariat|Eighth]]" sword. Even with just two blades, B is highly proficient in his sword skills, able to quickly finely slice rocks into various shapes. After obtaining [[Samehada]], B intended to use it as his main weapon. He has integrated Samehada into his fighting style by taking advantage of the sword's ability to 'cut' chakra, allowing him to bisect Itachi's [[Fire Release: Great Fireball Technique]].<ref>''Naruto'' chapter 549, page 5</ref> Samehada and B are capable of working in tandem; while it attacks the enemy on its own, B attacks them from a blind spot.<ref>''Naruto'' chapter 565, pages 2-3</ref> B also uses Samehada to store five of his swords while keeping the other two on hand.

B has immense physical strength and combat prowess, capable of easily fending off all three male members of [[Taka]] at once, despite them being dangerous fighters, while still holding back. He also won a sumō match against a [[Kintoki|giant bear]]. Killer B's fighting style is similar to that of his brother's, in which they both use wrestling moves instead of standard taijutsu. He can use the Lightning Release: Lariat, which has incredible speed and power, but is rather straightforward. Even as a young boy, he was the only person to successfully perform a Lightning Release: Double Lariat with A, allowing him to become the future Raikage's [[A–B Combo|tag-team partner]].<ref>Chapter 541, pages 18-19</ref> By the time of the Fourth Shinobi World War, B's Lightning Release: Lariat has become stronger than that of his brother's, not even needing Gyūki's chakra to overpower him, despite A being at full power.<ref>Chapter 543, page 17</ref>

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===NatureTransformation===

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Bhasshownremarkably fast reflexes, enough to both intercept Minato's [[Flying Thunder God Kunai|kunai]] with one of Gyūki's tentacles and counter the latter's [[Flying Thunder God Technique|surprise attack]].<ref>Chapter 542, page 16</ref><ref>Chapter 543, page 3</ref> He could also quickly react to Sasuke's close-range assault by blocking and repelling him with a single move.<ref>Chapter 413</ref> B is also immensely fast as he could instantly dodge [[Jūgo]]'s attack him from behind and move to another mountain before Taka even saw he was gone, evading Sasuke's Mangekyō Sharingan and requiring [[Karin]] to locate him.<ref>Chapter 413</ref>

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[[File:Charged a sharp but weak pencil-point.PNG|thumb|right|B's pencil charged with his lightning chakra.]]

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Killer B has displayed the ability to [[Chakra Flow|flow]] [[Nature transformation|lightning-natured chakra]] through his blades to increase their cutting power. B's prowess in [[Lightning Release]] techniques is so great, he can charge a sharp but weak pencil-point to pierce straight through a large tree trunk and even through the ground. As stated by Kisame, B is able to do this by increasing the vibration frequency of his lightning chakra high enough to surpass the standard penetrative force of [[Wind Release]] techniques.<ref>''Naruto'' chapter 470, page 12</ref>

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{{-}}

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===JinchūrikiTransformations===

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Bhasshownto be incredibly durable having received a solid kick to the neck from Sasuke only to drop his sword and begin writing lyrics. He also escaped unscathed after being electrocuted by Sasuke's [[Chidori]], and blasted from behind with a [[Piston Fist: Style One|powerful punch]] from Jūgo.<ref>Chapter 413</ref> He could even take two of A's Lightning Release: Lariats directly to the chest and with no visible damage, one of which being used at his full power.<ref>Chapter 543, pages 16-17</ref>

As a jinchūriki, B has a very large and strong levels of chakra, enough to make [[Samehada]] get very excited and betray Kisame. Killer B is one of the few people to have achieved full [[Tailed Beast Control|control]] over a tailed beast as noted by [[Danzō Shimura]],<ref>''Naruto'' chapter 458, page 3</ref> achieving this control with ease at the [[Falls of Truth]], greatly surprising the spectators.<ref>''Naruto'' chapter 452, page 11</ref> Like his fellow Kumo-nin, [[Yugito Nii]], B is able to transform into his tailed beast with great ease, reaching a full transformation in mere seconds and is able to maintain [[Tailed Beast Control#Jinchūriki|control]] even in this fully released state. B is the only known jinchūriki who can at will, transform and remain in his of his [[Killer B's Jinchūriki Forms#Full Eight-Tails Form|full tailed-beast form]] indefinitely. Because he has a strong relationship with his own tailed beast, it acts as his partner in battle, disturbing his chakra to dispel even [[genjutsu]] from the [[Mangekyō Sharingan]]. This makes B's "control" over Gyūki more of a willing partnership than actual control. Despite his undeniable control, B was forbidden from transforming by [[A]]. B however, disregards this, either when training or fighting formidable opponents.

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Likeotherjinchūriki, B has the ability to create a chakra cloak by drawing on part of his demon's power. He can then form this chakra into the form of two horns, and use them to attack the enemy with a technique called [[Lariat]]. This attack has incredible speed and power, but the linearity of his movements makes him easier to predict. The pinnacle of his jinchūriki prowess is his ability to easily fire a [[Tailed Beast Ball]]. He can fire one many times his own size. While in full Eight-Tails form B can spin to summon up a [[Tailed Beast Eight Twists|great force of wind]] that can destroy an entire forest with ease.

While originally only carrying two swords when he was young, B has developed his [[Kenjutsu|swordplay]] to an incredible level. Possessing a [[Acrobat|unique fighting style]], B holds his seven blades in between the joints of his arms (left armpit, both elbows), right leg, stomach, the right side of his neck, and in his mouth. As strange as it appears, B is very skilled with this. Because of the unpredictability of his movements, his opponents are easily overwhelmed with all of the varying swings, giving him great versatility very similar to hip-hop dance. B can force his opponents on the defensive with his style and when he finds an opening, B can impale his opponent with most of his swords quickly and simultaneously.

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[[File:Samehada.png|right|thumb|B wielding Samehada.]]

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Neither [[Suigetsu Hōzuki]] nor Sasuke, both highly trained swordsmen with the latter also being a Sharingan master, could read his swordplay.<ref>Chapter 411, pages 11-15</ref> Even [[Itachi Uchiha]] wasn't able to counter B's [[Acrobat]], being forced to retreat and rely on his [[Mangekyō Sharingan]] despite his considerable kenjutsu skill.<ref>Chapter 549, pages 14-17</ref> He is capable of cutting through almost anything when he flows his lightning chakra through his blades. B can also use these blades as mid-range projectiles. By covering himself with Gyūki's chakra, he creates an "Eighth" sword. Even with just two blades, B has highly proficient sword skills, being able to quickly finely slice rocks into various shapes. After obtaining [[Samehada]], B intended to use it as his main weapon. He has integrated Samehada into his fighting style by taking advantage of the sword's ability to 'cut' chakra, allowing him to bisect Itachi's [[Fire Release: Great Fireball Technique]].<ref>Chapter 549, page 5</ref> Samehada and B are capable of working in tandem; while it attacks the enemy on its own, B attacks them from a blind spot.<ref>Chapter 565, pages 2-3</ref> B also uses Samehada to store five of his swords while keeping the other two on hand.

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=== Ninjutsu ===

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B is quite knowledgeable in fūinjutsu, being able to distinguish between the superiority of the [[Four Symbols Seal]] and his own [[Iron Armour Seal]]<ref>Chapter 496, page 7</ref> as well as possessing a [[Sealing Technique: Octopus Hold|unique style of fūinjutsu]].<ref>Chapter 566, page 7</ref>

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==== Nature Transformation ====

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[[File:Charged a sharp but weak pencil-point.PNG|left|thumb|B's pencil charged with his lightning chakra.]]

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Like most of Kumo shinobi, Killer B can use [[Lightning Release]]. However, he also has proficiency in other elements such as [[Fire Release]], [[Water Release]], and [[Yang Release]].<ref name="d4" /> With lightning, B has displayed the ability to [[Chakra Flow|flow]] [[Nature transformation|lightning-natured chakra]] through his blades to increase their cutting power. B's prowess in Lightning Release techniques is so great, he can charge a sharp but weak pencil-point to pierce straight through a large tree trunk and even through the ground. As stated by Kisame, B is able to do this by increasing the vibration frequency of his lightning chakra high enough to surpass the standard penetrative force of [[Wind Release]] techniques.<ref>Chapter 470, page 12</ref>

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{{-}}

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[[File:InkCreation.png|thumb|right|Bdemonstrating his ability to produce ink.]]

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===Intelligence===

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B's skill with partial transformations is such that he can form all eight tentacles on his backwithouta cloak and do so very quickly, allowinghimtointerceptfast opponents,<ref>''Naruto''chapter541page15</ref>or have them burrow through the groundandcatchanopponentoffguard.<refname="C549P13">''Naruto'' chapter549,page13</ref>Hisdexteritywiththesetentaclesisabletostack and balance various blocks perfectly.<ref>''Naruto'' chapter 515, pages6-7</ref>Bcantransform one of his arms into that of Gyūki's<ref>''Naruto''chapter506,page7</ref>touseforvariouspurposessuchasthrowingfellowninjaalongdistanceawayorblockingattacks.<ref>''Naruto'' chapter 506, pages 7-8</ref><ref name="C549 P 13" />Similartohowotherjinchūrikiobtainphysicaltraitsfromtheirinner beast, B is abletoproduce[[InkCreation|ink]]fromhismouth,whichhemainly uses to write lyrics when he islackingofregular writing tools or to blind his opponent. This ink can be used in a more solid form to make [[InkCloneTechnique|ink clones]] whichimmobilisehisenemiesthroughwrestlinglocks.Aftertheopponentiscaptured, theclonesproceedtotrapand[[SealingTechnique:OctopusHold|seal]]them.

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Despite his seeminglycarefreenature, KillerBpossessessharpwit, asshownwhenheused the [[BodyReplacementTechnique]]toswitchplaceswithoneofGyūki'stentaclesohecouldescapeSasuke's[[Amaterasu]].Hecanalsobeverypersuasive and deceptive, ashequicklyturnedNaruto's attentionawayfromleavingtheTailedBeastTemplebyofferingtotrainhim.Healsohastheabilitytointerpretsomeone's "heart" aswellastransmithisownfeelingsmerelythroughtouchingsomeone(which is usuallydonethroughafistbump).Thisabilitywasfirstdemonstrated when he wastrainingwithNaruto in the [[TailedBeastTemple]],againwhenIrukaexpressedhiswishestoprotectNarutotohim<ref>Chapter536, page2</ref>andwhenhestoppedhisbrotherfromattackingNaruto.<ref>Chapter 541, page 14</ref>

While leaving the [[Valley of Clouds and Lightning]] after training, B was confronted by [[Taka]]. He was immediately attacked by [[Suigetsu]], whose [[Kubikiribōchō|sword]] B took and used to overpower [[Jūgo]]. [[Sasuke Uchiha]] then stepped in and used [[Sword of Kusanagi (Sasuke Uchiha)|his own sword]] to take back Suigetsu's. Impressed, B brought out his seven swords and attacked Sasuke, his unorthodox fighting style preventing Sasuke from tracking his movements with his [[Sharingan]]. Sasuke tried to gain the upper hand by [[Sword of Kusanagi: Chidori Katana|channelling lightning]] through his sword, but B did the same with one of his swords, removing the advantage, and plunged the other six into Sasuke's torso, dealing him a critical wound.

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While leaving the [[Valley of Clouds and Lightning]] after training, B was confronted by [[Taka]]. He was immediately attacked by [[Suigetsu]], whose [[Kubikiribōchō|sword]] B took and used to overpower [[Jūgo]]. [[Sasuke Uchiha]] then stepped in and used [[Sword of Kusanagi (Sasuke Uchiha)|his own sword]] to take back Suigetsu's. Impressed, B brought out his seven swords and attacked Sasuke, his unorthodox fighting style preventing Sasuke from tracking his movements with his [[Sharingan]]. Sasuke tried to gain the upper hand by [[Sword of Kusanagi: Chidori Katana|channelling lightning]] through his sword, but B did the same with one of his swords, removing the advantage, and plunged the other six into Sasuke's torso, dealing him a critical wound. Before he could finish off Sasuke, Suigetsu and Jūgo came to his defence while [[Karin]] retreated with Sasuke and [[Heal Bite|healed]] him. B was able to damage Suigetsu's sword but Taka was also able to force him back. Sasuke was healed by Karin and the fight continued. B became bored with the fight and tried to leave, but was tracked by [[Karin]].

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[[File:Suigetsu VsKiller Bee.jpg|thumb|B vs. Suigetsu.]]

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[[File:Suigetsu vs.B.png|thumb|left|B vs. Suigetsu.]]

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Before he could finish off Sasuke, Suigetsu and Jūgo came to his defence while [[Karin]] retreated with Sasuke and [[Heal Bite|healed]] him. B was able to damage Suigetsu's sword but Taka was also able to force him back. Sasuke was healed by Karin and the fight continued. B became bored with the fight and tried to leave, but was tracked by [[Karin]]. With escape not an option, B entered his [[Killer B's Jinchūriki Forms#Version 1|Version 1]] form and attacked Taka. Taka was able to elude him and Sasuke caught him in a [[Tsukuyomi|genjutsu]], which Gyūki helped B break out of, allowing B to hit the unaware Sasuke with a [[Lariat]], blasting a hole in Sasuke's chest, again mortally wounding him. Deciding to finish things off, B [[Killer B's Jinchūriki Forms#FullEight-TailsForm|fully transformed]] into his tailed beast. He then fired a [[Tailed Beast Ball]], which Suigetsu was able to protect the rest of Taka from by using himself as a shield.

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With escape not an option, B entered his [[Jinchūriki Forms#Version 1|Version 1]] form and attacked Taka. Taka was able to elude him and Sasuke caught him in a [[Tsukuyomi|genjutsu]], which Gyūki helped B break out of, allowing B to hit the unaware Sasuke with a [[Lightning Release: Lariat]], blasting a hole in Sasuke's chest, again mortally wounding him. Deciding to finish things off, B [[TailedBeastMode|fully transformed]] into his tailed beast. He then fired a [[Tailed Beast Ball]], which Suigetsu was able to protect the rest of Taka from by using himself as a shield.

Sasuke, specially healed by Jūgo, used [[Amaterasu]] on B. B rampaged in pain and almost crushed Karin with one of his tentacles. Sasuke [[Chidori Sharp Spear|severed]] the tentacle, and B used the opportunity to escape and fake his capture, by substituting with the severed tentacle and leaving behind a decoy. Taka were unaware of this, and delivered "B" to [[Akatsuki]] while the real B left the village to go on vacation. While later trying to extract Gyūki from this B's body, Akatsuki discovered that this was a fake.

Sasuke, specially healed by Jūgo, used [[Amaterasu]] on B. B rampaged in pain and almost crushed Karin with one of his tentacles. Sasuke [[Chidori Sharp Spear|severed]] the tentacle, and B used the opportunity to escape and fake his capture, by substituting with the severed tentacle and leaving behind a decoy. Taka were unaware of this, and delivered "B" to [[Akatsuki]] while the real B left the village to go on vacation. While later trying to extract Gyūki from this B's body, Akatsuki discovered that this was a fake.

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=== Five Kage Summit Arc ===

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=== Five Kage Summit ===

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[[File:Yosaku Cut.PNG|thumb|left|B and Sabu clash with Kisame.]]

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[[File:Yosaku Cut.PNG|thumb|B and Sabu clash with Kisame.]]

Free from his confinement to Kumogakure, B sought out [[Sabu]] to advance his music career. In the midst of training B was found by [[Kisame Hoshigaki]], who tracked his powerful chakra with his [[Samehada]]. While Sabu attacked him, B struck from behind with one of his lightning-imbued swords. Not only was Kisame able to block their attacks with Samehada, but B's lightning disappeared when it makes contact. B entered a Version 1 form and attempts to [[Headbutt]] him, but his chakra shroud disappeared too. Sabu realised that Samehada was absorbing B's chakra.

Free from his confinement to Kumogakure, B sought out [[Sabu]] to advance his music career. In the midst of training B was found by [[Kisame Hoshigaki]], who tracked his powerful chakra with his [[Samehada]]. While Sabu attacked him, B struck from behind with one of his lightning-imbued swords. Not only was Kisame able to block their attacks with Samehada, but B's lightning disappeared when it makes contact. B entered a Version 1 form and attempts to [[Headbutt]] him, but his chakra shroud disappeared too. Sabu realised that Samehada was absorbing B's chakra.

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[[File:Version 2 Lariat Anime.jpg|thumb|B charges at Kisame with a Version 2 Lariat.]]

B entered an seven-tailed Version 1 form and attacked Kisame again but Samehada absorbs most of his chakra. Upon realising that Samehada could only absorb six tails at a time, B entered a [[Killer B's Jinchūriki Forms#Version 2|Version 2]] form and created chakra-bones to use in a more powerful Lariat. Kisame was badly damaged and Samehada was only able to absorb his Version 2 chakra, returning B to a Version 1 form. Samehada used the chakra it absorbed from B to heal Kisame, who quickly merged with Samehada and created a [[Water Release: Great Exploding Water Colliding Wave|dome of water]] around them. B tried to get Sabu and [[Ponta]] out of the dome before they drown, but the water dome moved with Kisame. B drew Kisame away from Sabu and Ponta, in order to force him to release them to pursue B. Once they were free, B confronted Kisame, only for Kisame to render all of B's counterattacks ineffective and slowly absorb his chakra all the while.

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B entered a seven-tailed Version 1 form and attacked Kisame again but Samehada absorbs most of his chakra. Upon realising that Samehada could only absorb six tails at a time, B entered a [[Jinchūriki Forms#Version 2|Version 2]] form and created chakra-bones to use in a more powerful Lightning Release: Lariat. Kisame was badly damaged and Samehada was only able to absorb his Version 2 chakra, returning B to a Version 1 form. Samehada used the chakra it absorbed from B to heal Kisame, who quickly merged with Samehada and created a [[Water Release: Great Exploding Water Colliding Wave|dome of water]] around them. B tried to get Sabu and [[Ponta]] out of the dome before they drown, but the water dome moved with Kisame. B drew Kisame away from Sabu and Ponta, in order to force him to release them to pursue B. Once they were free, B confronted Kisame, only for Kisame to render all of B's counterattacks ineffective and slowly absorb his chakra all the while.

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[[File:Double Lariat Anime.jpg|thumb|left|B and A finish off "Kisame".]]

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[[File:Double Lariat Anime.jpg|thumb|B and A finish off "Kisame".]]

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When B lost consciousness, Kisame dissipated the water dome. To prevent B from escaping, Kisame tried to cut off his legs with Samehada. However, Samehada had grown fond of B's tailed beast chakra during the battle and betrayed Kisame; in addition to not letting Kisame harm B, it transfered some of the chakra it stole back to him. Kisame kicked it away and tried to cut off B's legs with one of B's own swords, but the Raikage and his bodyguards arrived to stop him, having noticed Kisame's water dome. Samehada continued to replenish B's reserves, allowing B and A to perform [[Double Lariat]] to decapitate Kisame. A then reprimanded B for running away from the village.

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When B lost consciousness, Kisame dissipated the water dome. To prevent B from escaping, Kisame tried to cut off his legs with Samehada. However, Samehada had grown fond of B's tailed beast chakra during the battle and betrayed Kisame; in addition to not letting Kisame harm B, it transfered some of the chakra it stole back to him. Kisame kicked it away and tried to cut off B's legs with one of B's own swords, but the Raikage and his bodyguards arrived to stop him, having noticed Kisame's water dome. Samehada continued to replenish B's reserves, allowing B and A to perform [[Lightning Release: Double Lariat]] to decapitate Kisame. A then reprimanded B for running away from the village.

When they returned to Kumogakure, B now carrying Samehada, they were greeted by the villagers at the main gate. B's students, [[Omoi]] and [[Karui]], ask about Samehada. They and B were unaware that Kisame, having faked his death, was hiding inside Samehada to gather intel on Kumo and the [[Shinobi Alliance]] during the meetings B later attended (and didn't pay attention to).

When they returned to Kumogakure, B now carrying Samehada, they were greeted by the villagers at the main gate. B's students, [[Omoi]] and [[Karui]], ask about Samehada. They and B were unaware that Kisame, having faked his death, was hiding inside Samehada to gather intel on Kumo and the [[Shinobi Alliance]] during the meetings B later attended (and didn't pay attention to).

Shortly before the [[Fourth Shinobi World War]] began, the Alliance decided to send the remaining jinchūriki to Kumogakure's [[Island Turtle]] to hide. B arrived there first, allowing him to defend fellow jinchūriki [[Naruto Uzumaki]] from the island's [[Giant Squid]] when he arrived. Shortly after this, Naruto approached B for help gaining control of the [[Nine-Tails]]. B refused, having noticed an [[Dark Naruto|evil]] within Naruto, and also due to Naruto accidentally insulting his rap. Later, when the squid attacked [[Motoi]], B came to his aid. After the squid was subdued, Motoi asked B why he saved him, despite surely knowing about Motoi's earlier attempt on his life. B's reaction was to act like it had never happened, and did not hesitate to reconcile with Motoi.

Shortly before the [[Fourth Shinobi World War]] began, the Alliance decided to send the remaining jinchūriki to Kumogakure's [[Island Turtle]] to hide. B arrived there first, allowing him to defend fellow jinchūriki [[Naruto Uzumaki]] from the island's [[Giant Squid]] when he arrived. Shortly after this, Naruto approached B for help gaining control of the [[Nine-Tails]]. B refused, having noticed an [[Dark Naruto|evil]] within Naruto, and also due to Naruto accidentally insulting his rap. Later, when the squid attacked [[Motoi]], B came to his aid. After the squid was subdued, Motoi asked B why he saved him, despite surely knowing about Motoi's earlier attempt on his life. B's reaction was to act like it had never happened, and did not hesitate to reconcile with Motoi.

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[[File:B and Motoi.png|thumb|left|B and Motoi reconcile.]]

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[[File:B and Motoi.png|thumb|B and Motoi reconcile.]]

After observing the reunion between B and Motoi, Naruto was able to overcome his inner hatred. With it vanquished, B took him to the [[Tailed Beast Temple|secret temple]] behind the [[Falls of Truth]], to allow him to battle the Nine Tails for control of its chakra. When Naruto first opened the [[Eight Trigrams Sealing Style|seal]] and released the Nine-Tails, B tried to help him contain it. His abilities were limited while in Naruto's subconscious and he was only able to block a tailed beast ball from the Nine-Tails before being knocked out of the fight. Naruto eventually emerged victorious and communicated all that he went through to B with a fist-bump. Naruto then demonstrated his new control of the Nine-Tails, allowing him to expose Kisame's presence.

After observing the reunion between B and Motoi, Naruto was able to overcome his inner hatred. With it vanquished, B took him to the [[Tailed Beast Temple|secret temple]] behind the [[Falls of Truth]], to allow him to battle the Nine Tails for control of its chakra. When Naruto first opened the [[Eight Trigrams Sealing Style|seal]] and released the Nine-Tails, B tried to help him contain it. His abilities were limited while in Naruto's subconscious and he was only able to block a tailed beast ball from the Nine-Tails before being knocked out of the fight. Naruto eventually emerged victorious and communicated all that he went through to B with a fist-bump. Naruto then demonstrated his new control of the Nine-Tails, allowing him to expose Kisame's presence.

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Kisame fled with Samehada and B pursued him. Samehada tried to return to B, allowing Kisame an opportunity to absorb his chakra. When he recovered, B flung [[Might Guy]] after Kisame. Guy was able to capture him but Kisame committed suicide to prevent the group from interrogating him. They tried to check the intel Kisame had with him, only to be [[Water Prison Technique|imprisoned]] while a [[shark]] swam away with the intel. B tried to catch the shark after he freed himself, but was unsuccessful. Fearing an imminent Akatsuki attack, the island's animal population was moved indoors. Because Naruto was not to know about the ongoing war, B helped keep Naruto distracted while the other members of the group fought the Akatsuki outside.

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Kisame fled with Samehada and B pursued him. Samehada tried to return to B, allowing Kisame an opportunity to absorb his chakra. When he recovered, B flung [[Might Guy]] after Kisame. Guy was able to capture him but Kisame committed suicide to prevent the group from interrogating him. They tried to check the intel Kisame had with him, only to be [[Water Prison Technique|imprisoned]] while a [[Wikipedia:Shark|shark]] swam away with the intel. B tried to catch the shark after he freed himself, but was unsuccessful. Fearing an imminent Akatsuki attack, the island's animal population was moved indoors. Because Naruto was not to know about the ongoing war, B helped keep Naruto distracted while the other members of the group fought the Akatsuki outside.

To keep Naruto occupied, B started helping him gain control of his new [[Nine-Tails Chakra Mode]], first by having him use his [[Tailed Beast Chakra Arms|chakra arms]] to stack blocks in a perfect column. When Naruto mastered this, they moved on to transforming into the Nine-Tails. The Nine-Tails would not cooperate with Naruto on this, leaving him unable to use the [[Tailed Beast Ball]]. They instead decided to practice with Naruto's standard techniques to see how the Nine-Tails' chakra affected them. Naruto began with his [[Rasengan]], which B recognised as being based on the Tailed Beast Ball. B encouraged him to focus on mastering the Rasengan in this new form.

To keep Naruto occupied, B started helping him gain control of his new [[Nine-Tails Chakra Mode]], first by having him use his [[Tailed Beast Chakra Arms|chakra arms]] to stack blocks in a perfect column. When Naruto mastered this, they moved on to transforming into the Nine-Tails. The Nine-Tails would not cooperate with Naruto on this, leaving him unable to use the [[Tailed Beast Ball]]. They instead decided to practice with Naruto's standard techniques to see how the Nine-Tails' chakra affected them. Naruto began with his [[Rasengan]], which B recognised as being based on the Tailed Beast Ball. B encouraged him to focus on mastering the Rasengan in this new form.

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During training, Naruto sensed some of the Nine-Tails' chakra [[Gold and Silver Brothers|elsewhere]]. B tried to convince him that it was nothing, determined to keep Naruto in the training room so he wouldn't find out about the war. He nevertheless let Naruto leave to go to the bathroom, unaware that it was a lie from Naruto. When Naruto didn't return, B went looking for him, but instead found [[Iruka Umino]], Naruto having found out about the war, and headed off to try and stop it. Iruka requested that B protect Naruto, and after recognising Iruka as a positive influence from fist-bumping with Naruto, B agreed, and went after Naruto. When the Eight Tails protested, B reminded him that they were still training, and stated that real world experience would always be faster than training. He caught up to Naruto and the two teamed up to break through the [[Thirty-Six Layer Self-Repairing Barrier]] to escape from the island. They then headed for the battlefield.

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During training, Naruto sensed some of the Nine-Tails' chakra [[Gold and Silver Brothers|elsewhere]]. B tried to convince him that it was nothing, determined to keep Naruto in the training room so he wouldn't find out about the war. He nevertheless let Naruto leave to go to the bathroom, unaware that it was a lie from Naruto. When Naruto didn't return, B went looking for him, but instead found [[Iruka Umino]], Naruto having found out about the war, and headed off to try and stop it. Iruka requested that B protect Naruto, and after recognising Iruka as a positive influence from fist-bumping with Naruto, B agreed, and went after Naruto. When the Eight Tails protested, B reminded him that they were still training, and stated that real world experience would always be faster than training. He caught up to Naruto and the two teamed up to break through the [[Self-Repairing Barrier]] to escape from the island. They then headed for the battlefield.

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[[File:B intercepts.png|thumb|left|B intercepts A's attack.]]

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[[File:B intercepts.png|thumb|B intercepts A's attack.]]

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While en route, they were intercepted by A and the [[Fifth Hokage]]. B stated he thought [[Tsunade]] was attractive. B tried to convince his brother to let them pass, promising to keep Naruto safe from Akatsuki. A was not convinced by his words and, when Naruto promised to use force to escape, the Raikage threatened to kill him. B blocks the latter's attack and informed his brother that he must be willing to kill both of them. A claimed to have no problem with this but B, unbelieving, bumped fists with him to remind him of all they had been through together. Still unconvinced, both he and Naruto tried to combat him but struggle doing so as A manages to fight them off. B and A later simultaneously hit each other with their respective Lariats, with B overpowering his brother.

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While en route, they were intercepted by A and the [[Fifth Hokage]]. B stated he thought [[Tsunade]] was attractive. B tried to convince his brother to let them pass, promising to keep Naruto safe from Akatsuki. A was not convinced by his words and, when Naruto promised to use force to escape, the Raikage threatened to kill him. B blocks the latter's attack and informed his brother that he must be willing to kill both of them. A claimed to have no problem with this but B, unbelieving, bumped fists with him to remind him of all they had been through together. B further stated that since A became the Raikage, he has failed to see B's development in strength, and has therefore underestimated him. Still unconvinced, both he and Naruto tried to combat him but struggle doing so as A manages to fight them off. B and A later simultaneously hit each other with their respective Lightning Release: Lariats, with B overpowering his brother. B explained how he overpowered A with his Lightning Release: Lariat; his true strength, along with Naruto's, came from the people that believed in them, not just the beasts inside of them. A eventually pushed B out of the way and activated his Lightning Release Armour again, seemingly intending to kill Naruto. Naruto dodged A, who revealed that he attacked in order to test Naruto. Impressed, he and the Hokage let them pass.

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B explainedhowheoverpoweredAwithhisLariat;histruestrength,alongwithNaruto's,camefromthepeoplethatbelievedinthem, notjust the beastsinsideofthem.Aeventuallypushed B out of the way and activatedhisLightningReleaseArmouragain, seeminglyintendingtokillNaruto. Naruto dodgedA,whorevealedthatheattacked in ordertotestNaruto. Impressed, he andtheHokageletthempass.

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B andNarutolaterencounteredseveralshinobi,including[[F]]whotoldBthattheyweretoreturntoheadquartersasback-up.Beforehe could continue however, Narutoattacked him revealing that F and the othershinobiweretransformed[[WhiteZetsuArmy|enemies]] much to B's shock. After taking out a few of the clones, B watched on with amazement and prideasNarutotookoutthe enemy, whilenotingthatinresponse to Naruto'sTailedBeastChakramodetheZetsuwere turning into trees in thesamemannerYamato's wood creations did at the [[Tailed Beast Temple]]. Later while Naruto arrived just in time to save two shinobi from [[Toroi]]'s onslaught, he hadaconversationwithoneof his fellow Kumo-nin before setting out once again.

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B and Naruto later encountered several shinobi, including [[F]] who told B that they were to return to headquarters asback-up. Before he could continue however, Naruto attacked him revealing that he and the other shinobi were transformed [[White Zetsu Army|enemies]] much to B'sshock. After taking out a few of the clones, B watched on with amazement and pride as Naruto took out the enemy, while noting that in response to Naruto's Tailed Beast Chakra mode the Zetsu were turning into trees in the same manner Yamato's wood creations did at the [[Tailed Beast Temple]]. Later while Naruto arrived just in time to save two shinobi from [[Toroi]]'s onslaught, he had a conversation with one of his fellow Kumo-nin before setting out once again.

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[[File:HōsenkaTsumabeni.png|thumb|left|B clashes with Itachi.]]

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[[File:Itachi vs B.png|thumb|B vs. Itachi.]]

While en route with Naruto, the two encountered [[Itachi Uchiha]] and [[Nagato]].

While en route with Naruto, the two encountered [[Itachi Uchiha]] and [[Nagato]].

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As the battle commenced suddenly with Itachi being forced to use the [[Fire Release: Great Fireball Technique]], B used Samehada to slice through the attack effectively saving both him and Naruto, although Samehada was unhappy about being used to cut through hot flames. As Itachi appeared behind B suddenly and used the [[Fire Release: Phoenix Sage Flower Nail Crimson]] technique, B countered with his [[Killer B's Jinchūriki Forms#Partial Transformation|transformed arm]]. B then used the tentacle to grab Itachi, only for him to disappear in a flurry of crows. As Itachi told B not to look into his eyes, Gyūki broke B out of the genjutsu he had already been caught in. He then charged Itachi using his [[Seven Swords Dance|seven swords]]. Itachi retreated onto Nagato's summoned [[Giant Drill-Beaked Bird|bird]].

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As the battle commenced suddenly with Itachi being forced to use the [[Fire Release: Great Fireball Technique]], B used Samehada to slice through the attack effectively saving both him and Naruto, although Samehada was unhappy about being used to cut through hot flames. As Itachi appeared behind B suddenly and used the [[Fire Release: Phoenix Sage Flower Nail Crimson]] technique, B countered with his [[Jinchūriki Forms#Partial Transformation|transformed arm]]. B then used the tentacle to grab Itachi, only for him to disappear in a flurry of crows. As Itachi told B not to look into his eyes, Gyūki broke B out of the genjutsu he had already been caught in. He then charged Itachi using his [[Acrobat|seven swords]]. Itachi retreated onto Nagato's summoned [[Giant Drill-Beaked Bird|bird]].

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[[File:B throttles Nagato.jpg|thumb|left|B attacks Nagato.]]

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[[File:B attacks Nagato.png|thumb|B attacks Nagato.]]

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As Itachi activates his [[Mangekyō Sharingan]] B tried to stop him by throwing his sword but it was repelled by Nagato. As a result of his Sharingan use, Itachi activated a crow he had stored in Naruto earlier, which was able to free him from Kabuto's control. Itachi, now on Naruto and B's side explained to Naruto and B why the crow had a Mangekyō Sharingan and how he got it. Nagato, after recovering from Itachi's attack and being completely controlled by Kabuto, sneaked behind them with his [[Giant Snake-Tailed Chameleon|chameleon summon]] and used [[Shinra Tensei]] to attack Killer B and Naruto. Nagato appeared behind B and tried to attack him, but B went into his Version 2 transformation and countered Nagato's attack with a Lariat. Nagato used the Preta Path's ability to [[Blocking Technique Absorption Seal|absorb]] B's chakra, causing him to regain a youthful appearance.

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As Itachi activates his [[Mangekyō Sharingan]] B tried to stop him by throwing his sword but it was repelled by Nagato. As a result of his Sharingan use, Itachi activated a crow he had stored in Naruto earlier, which was able to free him from Kabuto's control. Itachi, now on Naruto and B's side explained to Naruto and B why the crow had a Mangekyō Sharingan and how he got it. Nagato, after recovering from Itachi's attack and being completely controlled by Kabuto, sneaked behind them with his [[Giant Snake-Tailed Chameleon|chameleon summon]] and used [[Shinra Tensei]] to attack Killer B and Naruto. Nagato appeared behind B and tried to attack him, but B went into his Version 2 transformation and countered Nagato's attack with a Lightning Release: Lariat. Nagato used the Preta Path's ability to [[Blocking Technique Absorption Seal|absorb]] B's chakra, causing him to regain a youthful appearance.

Seeing Naruto in dire straits with his soul being [[Soul Removal|removed]], B moved to attack Nagato. Nagato, sharing vision with his own chameleon summon and the King of Hell, intercepted B by using his [[Asura Path]] abilities. Before Nagato can fatally injure B and remove Naruto's soul, they were rescued by Itachi's [[Susanoo]]. As Nagato used [[Chibaku Tensei]] in an effort to trap them, Itachi told them to attack the centre of the sphere in an attempt to dispel the technique. With the combined force of B's [[Tailed Beast Ball]], Itachi's [[Yasaka Magatama]] and Naruto's [[Wind Release: Rasenshuriken]], the sphere was dispelled. B watched on as Itachi's [[Sword of Totsuka]] began to seal Nagato who passes on his final words to Naruto, before passing onto the afterlife.

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Seeing Naruto in dire straits with his soul being [[Absorption Soul Technique|removed]], B moved to attack Nagato. Nagato, sharing vision with his own chameleon summon and the King of Hell, intercepted B by using his [[Asura Path]] abilities. Before Nagato could fatally injure B and remove Naruto's soul, they were rescued by Itachi's [[Susanoo]]. As Nagato used [[Chibaku Tensei]] in an effort to trap them, Itachi told them to attack the centre of the sphere in an attempt to dispel the technique. With the combined force of B's [[Tailed Beast Ball]], Itachi's [[Yasaka Magatama]] and Naruto's [[Wind Release: Rasenshuriken]], the sphere was dispelled. B watched on as Itachi's [[Sword of Totsuka]] began to seal Nagato who passes on his final words to Naruto, before passing onto the afterlife.

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After Itachi claims that he will stop the [[Summoning: Impure World Reincarnation]] technique, B voiced his doubts and recalled that they were not able to kill the reincarnated ninja, just seal them. Itachi reminded them again that no matter how infallible a technique may seem, it always had a weak point. As Naruto stated that he would end the war and attempted to create shadow clones he reverted to his normal self, having used up too much of the Nine Tails's chakra. After Itachi told Naruto not to try to shoulder everything himself, B told him that he had made a promise to Iruka to protect him.

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After Itachi claims that he will stop the [[Summoning: Impure World Reincarnation]] technique, B voiced his doubts and recalled that they were not able to kill the reincarnated ninja, just seal them. Itachi reminded them again that no matter how infallible a technique may seem, it always had a weak point. As Naruto stated that he would end the war and attempted to create shadow clones he reverted to his normal self, having used up too much of the Nine Tails's chakra. After Itachi told Naruto not to try to shoulder everything himself, B told him that he had made a promise to Iruka to protect him.

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B was later scolded by Gyūki for taking too long to urinate and for letting Naruto go ahead of them. When Naruto's clone contacts them mentally, wanting help for fighting the reincarnated Third Raikage, he asked B to let him speak to Gyūki to which B refused while urinating. However, the clone still got to speak to the beast because it could overhear mentally. After catching up to him, B and Naruto ran into [[Tobi]] with his [[Six Paths of Pain]].

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B was later scolded by Gyūki for taking too long to urinate and for letting Naruto go ahead of them. When Naruto's clone contacts them mentally, wanting help for fighting the reincarnated Third Raikage, he asked B to let him speak to Gyūki to which B refused while urinating. However, the clone still got to speak to the beast because it could overhear mentally.

Afterashortskirmishwiththeotherjinchūriki, andconversingwithGyūkiabout the jinchūrikiandYugito's fate, B enquiredabout the "other[[Madara]]" that Naruto was speaking of. Lookingonsmiling as NarutotoldTobi that itwasn'tallbadlivingwithatailedbeastinsidethem, hedeclared that he wouldgofirstbeforestaring in shockas the otherjinchūrikibegantheirtailedbeasttransformations.

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Later,intheanime,Bwasmetby [[Motoi]], onordersbyAto aid B. Soon afterwards, they were met by the surpiseappearanceof the reincarnated [[Blue B]]. To their further surprise, Blue B still possessed the ability to access Gyūki's demon cloak and enter "Version 2" mode. Caught off guard by this, the controlled Blue B launcheda Tailed Beast Ball at them. Samehada however acted first and consumed the blast. B then entered "Version2" and clashed with his predecessor. Not understanding how this is possible, Gyūki asked Blue B how he can still use the demon's power. Blue B explained that his sudden rampage from thirty years ago was in fact orchestrated by [[Orochimaru]] who harvested some of Gyūki's severed horn during the chaos. BlueBalso explained that the said genetic material was used as amediumto recreate Gyūki's power. Seeing that BlueB'sdemonpowersandimmortalbodywastoomuchfor him to handle alone, Bdecided to retreat. Motoi tried to help, only to be defeated quickly. Seeing Motoi in trouble, B quickly counterattacked to save his childhood friend. Shocked that B had actually found true friends who accept him for who and what he is,BlueBrealised that Bhad in factfound what Blue B could not to become a fully-realised jinchūki. Happy to see that B had found his own happiness and succeed where he could not, Blue B was able to break the summoningcontractandreturntotheafterlife.<ref>''Naruto: Shippūden'' episode 318</ref>

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[[File:Hachibiunleashed.png|thumb|BtransformsintoGyūki to leveltheforest.]]

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===FourthShinobiWorldWar:Climax===

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Shocked that they still had their tailed beast skills, B attacked Fū head-on nonetheless. After she dodged several of his and [[Samehada]]'sattacks, Naruto informed him of the shared field of vision that the [[Six Paths of Pain]] possessed using the [[Rinnegan]]. Catching Naruto, B fled the vicinity after seeing Yugito unleash her [[Mouse Hairball]] technique. Clashing with her while escaping, he was able to land a somewhat shallow attack on her that immediately begins repairing. This opportunity however, allowed B to see where Tobi had implanted the [[chakra receivers]] in his Six Paths. After Naruto'sattempt to destroy the receivers in Rōshi's chest was thwarted, B agreed with Gyūki that the forest was too much of a hindrance for them and transformed into Gyūki to [[Tailed Beast Eight Twists|level the entire forest]].

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[[File:Jinchūrikiclashes.png|thumb|left|B and Naruto clash with Yugito and Han.]]

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After catching up to Naruto, the two jinchūriki ran into [[Tobi]] with his [[Six Paths of Pain]]. After a short skirmish with the other jinchūriki, and conversing with Gyūki about the jinchūriki and Yugito's fate, B enquired about the "other [[Madara]]" that Naruto was speaking of. Looking on smiling as Naruto told Tobi that it wasn't all bad living with a tailed beast inside them, he declared that he would go first before staring in shock as the other jinchūriki began their tailed beast transformations. Shocked that they still had their tailed beast skills, B attacked Fū head-on nonetheless. After she dodged several of his and [[Samehada]]'s attacks, Naruto informed him of the shared field of vision that the [[Six Paths of Pain]] possessed using the [[Rinnegan]]. Catching Naruto, B fled the vicinity after seeing Yugito unleash her [[Mouse Hairball]] technique. Clashing with her while escaping, he was able to land a somewhat shallow attack on her that immediately begins repairing. This opportunity however, allowed B to see where Tobi had implanted the [[chakra receivers]] in his Six Paths.

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B immediately moved to seal the revived jinchūriki with his [[Sealing Technique: Octopus Hold|Octopus Hold]] technique but it was unsuccessful as Tobi caused the jinchūriki to enter Version 2-like states. As they began counter-attacking, B andNarutotried to fend them off, but began feeling the pressures of fighting six powerful opponents. B was attacked by a fully transformed [[Han]], who [[Horn Breaking|gored]] him with his horns and sent him flying, seemingly knocking him unconscious. After B cameto, he asked Gyūki if it was all right to whichitreplied that they were both wounded. After Tobi lost total control over the [[Five-Tails]] and restrained it with a [[Chakra Chains (Outer Path)|chakra chain]], B attempted to crush him within Gyūki's fist, but Tobi simply slipped trough it.

After Naruto's attempt to destroy the receivers in Rōshi's chest was thwarted, B agreed with Gyūki that the forest was too much of a hindrance for them and transformed into Gyūki to [[Tailed Beast Eight Twists|level the entire forest]]. B immediately moved to seal the revived jinchūriki with his [[Sealing Technique: Octopus Hold|Octopus Hold]] technique but it was unsuccessful as Tobi caused the jinchūriki to enter Version 2-like states. As they began counter-attacking, B and Naruto tried to fend them off, but began feeling the pressures of fighting six powerful opponents. B was attacked by a fully transformed [[Han]], who [[Horn Breaking|gored]] him with his horns and sent him flying, seemingly knocking him unconscious. After B came to, he asked Gyūki if it was all right to which it replied that they were both wounded. After Tobi lost total control over the [[Five-Tails]] and restrained it with a [[Demonic Statue Chains|chakra chain]], B attempted to crush him within Gyūki's fist, but Tobi simply slipped trough it.

As the Five-Tails was being subdued, B and the Eight-Tails asked Naruto if he had also heard Five-Tails' voice and the Eight-Tails then lamented that seeing other tailed beasts treated that way naturally annoyed the rest of them. While Gyūki and the Nine-Tails were talking telepathically, Naruto suggested using [[shadow clones]] to create a diversion and allow them to strike Tobi, B urged Naruto not to as he would die due to the Nine-Tails sucking away his chakra. However, Gyūki revealed that the Nine-Tails had seemingly stopped doing this for some time now due to Naruto's stable condition after using so much of the beasts' chakra. He then got tossed away by a [[Four-Tails|fully transformed]] [[Rōshi]]. B was later impressed when Naruto managed to escape Son Gokū's stomach using shadow clones.

As the Five-Tails was being subdued, B and the Eight-Tails asked Naruto if he had also heard Five-Tails' voice and the Eight-Tails then lamented that seeing other tailed beasts treated that way naturally annoyed the rest of them. While Gyūki and the Nine-Tails were talking telepathically, Naruto suggested using [[shadow clones]] to create a diversion and allow them to strike Tobi, B urged Naruto not to as he would die due to the Nine-Tails sucking away his chakra. However, Gyūki revealed that the Nine-Tails had seemingly stopped doing this for some time now due to Naruto's stable condition after using so much of the beasts' chakra. He then got tossed away by a [[Four-Tails|fully transformed]] [[Rōshi]]. B was later impressed when Naruto managed to escape Son Gokū's stomach using shadow clones.

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After Naruto successfully removed the [[chakra receiver]], B watched on with shock as the beast was resealed into the [[Demonic Statue of the Outer Path]] in the blink of an eye. As Naruto rallies, telling the beast and B to get ready, it told him that he and B would be take the front-line while Naruto acted as support because he was still unable to transform into the Nine-Tails. After Naruto told them it would be fine because they were a pair of duos, he wondered whether Kurama had finally come around. As the battle began, to B's astonishment, Naruto assumed the form of his tailed beast before joining the fray.

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After Naruto successfully removed the [[chakra receiver]], B watched on with shock as the beast was resealed into the [[Demonic Statue of the Outer Path]] in the blink of an eye. As Naruto rallies, telling the beast and B to get ready, it told him that he and B would be take the front-line while Naruto acted as support because he was still unable to transform into the Nine-Tails. After Naruto told them it would be fine because they were a pair of duos, he wondered whether Kurama had finally come around. As the battle began, to B's astonishment, Naruto assumed the form of his tailed beast before joining the fray. During Naruto's attack, Gyūki stopped the Three-Tails from attacking him, and also repelled another attack from the Five-Tails. After the Three-Tails freed itself from Gyūki's tentacles, they watched on as the five beasts prepared a collaborative [[Tailed Beast Ball]] and Naruto prepared to negate the attack with one of his own. As Gyūki wondered if Naruto would be able to do it, B told it that he almost did it during his training, but was sure that Naruto would be able to do it now.

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During Naruto's attack, Gyūki stopped the Three-Tails from attacking him, and alsorepelled another attack from the Five-Tails. After the Three-Tails freed itself from Gyūki's tentacles, they watched on as the five beasts prepared a collaborative [[Tailed Beast Ball]] and Narutopreparedto negate the attackwith one of hisown.As Gyūki wondered if Naruto would be able to do it, B told it that he almost did it during his training, but was sure that Naruto would be able to do it now.

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[[File:Naruto and Buppercut.png|thumb|left|Naruto and KillerBbattling the DemonicStatue of theOuterPath.]]

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[[File:B and Naruto uppercut.PNG|thumb|left|Naruto and Killer B battling the Demonic Statue of the Outer Path.]]

As the two Tailed Beast Balls collided, B grabbed Rōshi's body and protects himself from the after-effects of the attack as he noted that Naruto hit the base of the other attack allowing it fly into the air. He later congratulated Naruto on freeing the other beasts, before advancing behind Naruto, Guy and Kakashi prepared to fight Tobi directly. Later, as Naruto mocked Tobi with the information he had just learned, B looked on smirking. After the jinchūriki's corpses are enveloped in a light of sorts as the Impure World Reincarnation technique is released, B told Naruto that they had to pick up the pace to compete with Itachi's contribution. He is later seen mobilised beside Naruto, Kakashi and Guy as they prepare to assault [[Tobi]] and the [[Demonic Statue of the Outer Path]].

As the two Tailed Beast Balls collided, B grabbed Rōshi's body and protects himself from the after-effects of the attack as he noted that Naruto hit the base of the other attack allowing it fly into the air. He later congratulated Naruto on freeing the other beasts, before advancing behind Naruto, Guy and Kakashi prepared to fight Tobi directly. Later, as Naruto mocked Tobi with the information he had just learned, B looked on smirking. After the jinchūriki's corpses are enveloped in a light of sorts as the Impure World Reincarnation technique is released, B told Naruto that they had to pick up the pace to compete with Itachi's contribution. He is later seen mobilised beside Naruto, Kakashi and Guy as they prepare to assault [[Tobi]] and the [[Demonic Statue of the Outer Path]].

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[[File:Hachi-B attacks Gedo Mazo.PNG|thumb|B attacks the statue.]]

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[[File:B attacks Gedo Mazo.png|thumb|B attacks the statue.]]

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While the shinobi regroup and discuss the gash in Tobi's mask. B uses the opportunity to attack the statue. Moving in with a punch, he declared that the statue was wide open. However, his attack was deflected by Tobi's [[Uchiha Flame Battle Encampment]] barrier which burned his hand. Telling Naruto that he was okay, B prepared to launch the strategy that Kakashi had developed. Holding all the shinobi in his hands, B threw the trio towards Tobi. When they regroup after Tobi's arm is hit by a seemingly unseen attack, B listened to Kakashi's explanation of Tobi's technique and then enquired if all [[Space–Time Ninjutsu]] shared the same dimension. When told no, B told Naruto that it still would not be easy to land an attack on an intangible person. When Kakashi stated that their belief that Tobi was becoming intangible was incorrect, B enquired once again how it was possible for their two Sharingan to share the same dimension. As the battle against Tobi continued Tobi shot multiple stakes at Gyūki and B which are made to bind and supress a tailed beasts power using his Space–Time Ninjutsu. Incapable of assisting because of the stakes, B is left to observe as Naruto successively breaks Tobi's mask revealing his true identity as Obito Uchiha. When the real Madara arrived to the battlefield, B asked Naruto what this could mean for the Kage, distressed at the possibility of something happening to his brother. When Madara casually disregarded the situation, Naruto used his tails to free him of the stakes, and threw them at the Uchiha, however, Madara easily blocked the stakes with a [[Gunbai Barrier Technique|barrier]] from his gunbai. Madara then told Obito to handle Kakashi and Might Guy, while he dealt with B and Naruto.

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While the shinobi regroup and discuss the gash in Tobi's mask. B uses the opportunity to attack the statue. Moving in with a punch, he declared that the statue was wide open. However, his attack was deflected by Tobi's [[Uchiha Flame Formation]] barrier which burned his hand. Telling Naruto that he was okay, B prepared to launch the strategy that Kakashi had developed. Holding all the shinobi in his hands, B threw the trio towards Tobi. When they regroup after Tobi's arm is hit by a seemingly unseen attack, B listened to Kakashi's explanation of Tobi's technique and then enquired if all [[Space–Time Ninjutsu]] shared the same dimension. When told no, B told Naruto that it still would not be easy to land an attack on an intangible person. When Kakashi stated that their belief that Tobi was becoming intangible was incorrect, B enquired once again how it was possible for their two Sharingan to share the same dimension. As the battle against Tobi continued Tobi shot multiple stakes at Gyūki and B which are made to bind and suppress a tailed beasts power using his Space–Time Ninjutsu. Incapable of assisting because of the stakes, B is left to observe as Naruto successively breaks Tobi's mask revealing his true identity as Obito Uchiha. When the real Madara arrived to the battlefield, B asked Naruto what this could mean for the Kage, distressed at the possibility of something happening to his brother. When Madara casually disregarded the situation, Naruto used his tails to free him of the stakes, and threw them at the Uchiha, however, Madara easily blocked the stakes with a barrier. Madara then told Obito to handle Kakashi and Might Guy, while he dealt with B and Naruto.

As the battle with Madara ensued, B was seemingly knocked to the ground, leading the beast to comment on Madara's power. When an injured Guy told them that was why Madara was worth fighting, the beast told Guy that he shouldn't be pushing himself so hard. As the battle waged on, he and Guy were restrained by Madara, before the Uchiha can land the finishing blow, he is intercepted by Naruto. After Might Guy's [[Daytime Tiger]] sends the legendary ninja flying away from them, B noted that Guy wasn't just acting tough. After breaking free of his constraints, B warned Naruto that the wood could suppress a tailed beast's power before turning his attention to the statue. Forming a collaborative tailed beast ball with Naruto, B fires it at the statue and believed it to be destroyed. Their celebration, however, was cut short when the smoke cleared and the Ten-Tails appeared on the battlefield.

As the battle with Madara ensued, B was seemingly knocked to the ground, leading the beast to comment on Madara's power. When an injured Guy told them that was why Madara was worth fighting, the beast told Guy that he shouldn't be pushing himself so hard. As the battle waged on, he and Guy were restrained by Madara, before the Uchiha can land the finishing blow, he is intercepted by Naruto. After Might Guy's [[Daytime Tiger]] sends the legendary ninja flying away from them, B noted that Guy wasn't just acting tough. After breaking free of his constraints, B warned Naruto that the wood could suppress a tailed beast's power before turning his attention to the statue. Forming a collaborative tailed beast ball with Naruto, B fires it at the statue and believed it to be destroyed. Their celebration, however, was cut short when the smoke cleared and the Ten-Tails appeared on the battlefield.

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==Movies==

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[[File:AlliedForcesJutsu.png|thumb|Killer B together with the Allied Shinobi Force.]]

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===Naruto5:BloodPrison===

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AskingKuramaifitreallywanted to fight that, Gyūki is told that it could not hide from the beast. Handing over Guy as per the fox's request, the two beast were attacked by the Ten-Tails surprising them with its speed. Ending up on either side of the beast, B signals to Gyūki to fire the [[Continuous Tailed Beast Balls]] at the beast. When the smoke cleared, Gyūki was nowhere to be seen. It was later revealed, as B announced their strategy, that Kakashi had warped them right above the Ten-Tails to launch a Tailed Beast Ball at point-blank range. The Ten-Tails flicks his Tailed Beast Ball back at him. With B's full transformation now having reached its limit, Gyūki tells B to buy him some time while he generates more chakra to use. As the Ten-Tails fires a Tailed Beast Ball, the attack is misdirected by the timely arrival of the the entire Allied Shinobi Forces.

With the Alliance having bought enough time, B flew towards the [[Ten-Tails]] on the back of one of [[Sai]]'s [[Super Beast Imitating Drawing|birds]] with his chakra now replenished. As the beast prepared to launch a [[Tailed Beast Ball]] towards the shinobi, B transformed into the Eight-Tails and prepared a Tailed Beast Ball of his own. Recklessly stuffing Gyūki's head into the beast's mouth, B was able to stop the attack as well as harm the Ten-Tails as both Tailed Beast Balls detonated inside it. Casting aside [[Omoi]]'s words of caution, he noted that when it came to protecting everyone he was fearless.

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With the chakra shrouds protecting them dissipated, Naruto being healed, and Kurama kneading more chakra, B and Gyūki announced that it was time for them to take centre-stage once again to buy the duo some time to recover as Gyūki noted that the Ten-Tails would become unstoppable if it underwent its final transformation. With [[Shikamaru]]'s strategy initiated, and the shinobi begin to construct [[Earth Release: Practice Brick Technique|earthen]] — albeit feeble — defences, B intercedes and attempted to throw the attack off-trajectory. However, with none of their combined efforts seemingly working, and the situation looking dire, the Alliance is saved by the arrival of the [[Fourth Hokage]], unbeknownst to them as B looked on puzzled that the attacked had seemingly just vanished.

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=== Birth of the Ten-Tails' Jinchūriki ===

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As Obito emerged within the barrier some time later after [[Six Paths Ten-Tails Coffin Seal|sealing]] the beast inside himself, B asked Gyūki whether or not that was the beast's final form. Gyūki told him that it was not and that from all appearances, it seemed that the beast had been sealed before reaching its final form. With the situation later turning grim as the Alliance was [[Six Red Yang Formation|trapped]] in a barrier with a [[Tailed Beast Ball]]-firing [[Wood Release: Flowering Tree|tree]], B and the other shinobi soon found themselves shrouded in the previous Version 1 mantles again. He noted to Gyūki that it must have also felt Kurama's Yin and Yang halves merge. He and the others subsequently found themselves on the outside of the barrier, escaping the near-fatal attack thanks to Naruto and Minato's [[Flying Thunder God Technique|action]].

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When Obito later extracted the Ten-Tails which begin transforming into a giant tree, Gyūki informed B that the Ten-Tails had assumed its true and final form. As the roots of the tree chased B down who complained about the volume of roots that had come after him alone, Gyūki noted that it was more than likely because the tree sensed that he had more chakra than the other shinobi. Ultimately, while worn out, B with Samehada's aid was able to destroy the roots that had confronted him.

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[[File:Obito loses power.png|thumb|B and the Allied Forces take back the tailed beasts' chakra.]]

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When the Kage re-entered the battlefield and A made his way over to where B was and exclaimed that they should get ready to fight, an excited B noted that it was time for the [[Lightning Release: Double Lariat]] [[A–B Combo|duo]] to fight. After Naruto and Sasuke combine their power, landing a critical hit on Obito and weakening his hold on the Ten-Tails, Naruto begins to use the accumulated chakra he got from the other tailed beast to remove the Ten-Tails from Obito. Because Naruto doesn't have any of [[Shukaku]] nor [[Gyūki]]'s chakra, Naruto was unable to succeed. Killer B and Gaara joined in to aid Naruto and drag their respective tailed beast's chakra out of Obito, stopping the flower atop the tree from blooming.

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Though successful in their venture and as Obito lay defeated, a new threat reared its head against the extracted tailed beasts: a [[Outer Path: Samsara of Heavenly Life Technique|revived]] Madara Uchiha. Reuniting with the other tailed beasts after having evacuated the wounded shinobi to a safe location, the Uchiha was able to bind the beasts with the [[Demonic Statue Chains]] and began dragging them towards the statue which he had extracted from Obito. Struggling against his confines, as he is dragged ever closer to the looming threat, B severed one of his tentacles. Gyūki apologises to B as it is extracted and sealed within the statue along with the other tailed beasts.

Despite having suffered the extraction of his tailed beast, B was later shown to have survived by using the chakra of Gyūki's previously severed tail. Later, with Madara having succeeded in obtaining the Rinnegan power of both his eyes and becoming the Ten-Tails' jinchūriki, the revived Uchiha finally cast [[Infinite Tsukuyomi]], shocking B.

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{{-}}

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=== Kaguya Ōtsutsuki Strikes ===

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Ultimately, he and the rest of the world were freed from the genjutsu by Naruto and Sasuke after they ended the war.

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== Blank Period ==

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=== The Last: Naruto the Movie ===

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{{Main|The Last: Naruto the Movie}}

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Two years after the war and when the Moon begins to draw closer to the Earth, Killer B and his brother use a special chakra weapon to destroy the fragments heading to the planet. During Naruto's fight with [[Toneri]], A instructs B to destroy the Moon to ensure it does not fall to them once the hour time limit is up. B refuses stating he will not kill Naruto and his friends. Luckily, Naruto defeated Toneri and stopped the Moon in time. He was last seen at Naruto and [[Hinata]]'s wedding, bumping fists with Naruto.

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== Epilogue ==

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[[File:B talks with Gyuki.png|thumb|B and Gyūki talking about Naruto.]]

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Years later, with Gyūki resealed back inside of him, B complains about how he's bored and considers he should go and see how Naruto's doing, only for Gyūki to note that Naruto is busy, unlike B.

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{{-}}

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== In other media ==

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=== Movies ===

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==== Naruto the Movie: Blood Prison ====

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{{Main|Naruto the Movie: Blood Prison}}

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[[Fourth Raikage|A]] had B summoned following a failed attempt on his life by an assassin disguised as [[Naruto Uzumaki]], and sent to the aid of the real one at the [[Hōzuki Castle]]. When he arrived, B saved Naruto's life from [[Satori]]'s attack and repelled the beast with a punch, before engaging it with the other allies sent as backup. After Satori was eventually defeated, B lifted the [[Box of Ultimate Bliss]] and dropped it in the ocean, before going home.

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== Video Games ==

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=== Video Games ===

{{playable in}}

{{playable in}}

== Creation and Conception ==

== Creation and Conception ==

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Masashi Kishimoto in a 2012 Shōnen Jump interview, stated that one of his past editors who really likes pro wrestling greatly influenced his decision to create a character that — even though he was a shinobi — used pro wrestling moves as part of his techniques. He also stated that he wanted to make him into an interesting character and one of the most powerful shiniobi in the series. Kishimoto went on to say that he has trouble writing B's lines at times because he always wants them to rhyme due to his rapping style.

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Masashi Kishimoto in a 2012 Shōnen Jump interview, stated that one of his past editors who really likes pro wrestling greatly influenced his decision to create a character that — even though he was a shinobi — used pro wrestling moves as part of his techniques. He also stated that he wanted to make him into an interesting character and one of the most powerful shinobi in the series. Kishimoto went on to say that he has trouble writing B's lines at times because he always wants them to rhyme due to his rapping style.

== Trivia ==

== Trivia ==

Line 145:

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* Though it is unconfirmed, in his flashbacks in the manga, Killer B was only ever referred to as B until his confrontation with Minato, where B is praised as a "killer shinobi". Since then B has been known as Killer B, suggesting that it was Minato who bestowed him the title "Killer".

* Though it is unconfirmed, in his flashbacks in the manga, Killer B was only ever referred to as B until his confrontation with Minato, where B is praised as a "killer shinobi". Since then B has been known as Killer B, suggesting that it was Minato who bestowed him the title "Killer".

* Bī is the Japanese pronunciation of the letter "B" (as well as the Japanese pronunciation of "Bee"). This parallels the names of other Kumogakure shinobi such as [[F]] and [[J]] for example.

* Bī is the Japanese pronunciation of the letter "B" (as well as the Japanese pronunciation of "Bee"). This parallels the names of other Kumogakure shinobi such as [[F]] and [[J]] for example.

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* During a fierce battle with [[Taka]], B quoted [[Wikipedia:Muhammad Ali|Muhammad Ali]]'s famous line, "''float like a butterfly, sting like a bee''".<ref>''Naruto'' chapter 411, pages 18-19</ref>

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* During a fierce battle with [[Taka]], B quoted [[Wikipedia:Muhammad Ali|Muhammad Ali]]'s famous line, "''float like a butterfly, sting like a bee''".<ref>Chapter 411, pages 18-19</ref>

* Killer B makes various references to bees. This is a pun on the number of tails his tailed beast has. Eight in Japanese is {{translation|hachi|八}}, a homophone to the Japanese word for bee, {{translation|hachi|蜂}}.

* Killer B makes various references to bees. This is a pun on the number of tails his tailed beast has. Eight in Japanese is {{translation|hachi|八}}, a homophone to the Japanese word for bee, {{translation|hachi|蜂}}.

* Though not confirmed, Killer B was given the name of Kira Hachi by fans. It comes from the word "''Kirābī''" incorrectly translated into Japanese (Hachi is the Japanese word for "''bee''", as well as "''Eight''". Kira is a loanword of the English "''killer''"). Kira Hachi, can be translated to "''Killer Eight''", following the homophone of bee.

* Though not confirmed, Killer B was given the name of Kira Hachi by fans. It comes from the word "''Kirābī''" incorrectly translated into Japanese (Hachi is the Japanese word for "''bee''", as well as "''Eight''". Kira is a loanword of the English "''killer''"). Kira Hachi, can be translated to "''Killer Eight''", following the homophone of bee.

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* B's nickname may be a reference to [[Wikipedia:The Killer Bees (professional wrestling)|The Killer Bees]], a professional wrestling team in the [[Wikipedia:World Wrestling Entertainment|World Wrestling Federation]]. Additionally, the [[Double Lariat]] resembles the "Cross Bomber" move used by the Hell's Missionaries tag-team in Kinnikuman, a wrestling manga.

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* B's nickname may be a reference to [[Wikipedia:The Killer Bees (professional wrestling)|The Killer Bees]], a professional wrestling team in the [[Wikipedia:World Wrestling Entertainment|World Wrestling Federation]]. Additionally, the [[Lightning Release: Double Lariat]] resembles the "Cross Bomber" move used by the Hell's Missionaries tag-team in Kinnikuman, a wrestling manga.

* B has used or has possession of two of the [[Seven Swordsmen of the Mist]] blades so far. He used [[Zabuza Momochi]]'s [[Kubikiribōchō]] in his fight with [[Taka]] and he has taken possession of [[Kisame Hoshigaki]]'s [[Samehada]].

* B has used or has possession of two of the [[Seven Swordsmen of the Mist]] blades so far. He used [[Zabuza Momochi]]'s [[Kubikiribōchō]] in his fight with [[Taka]] and he has taken possession of [[Kisame Hoshigaki]]'s [[Samehada]].

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* In chapter [[The Secret Story of the Strongest Tag Team!!|542]], when A and B face off against several [[Iwagakure]] shinobi while on a mission,<ref>''Naruto'' chapter 542, pages 6-7</ref> B is first depicted with longer hair and looks a bit older. However, in subsequent panels his hair is once again short and spiky and looks much younger.<ref>''Naruto'' chapter 542, pages 7-8</ref> Oddly, this was not corrected in the tankōbon.

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* In chapter [[The Secret Story of the Strongest Tag Team!!|542]], when A and B face off against several [[Iwagakure]] shinobi while on a mission,<ref>Chapter 542, pages 6-7</ref> B is first depicted with longer hair and looks a bit older. However, in subsequent panels his hair is once again short and spiky and looks much younger.<ref>Chapter 542, pages 7-8</ref> Oddly, this was not corrected in the tankōbon.

* In a 2012 Shōnen Jump interview, [[Masashi Kishimoto]] stated that [[Chōji Akimichi]] and B were currently his favourite characters in the ''Naruto'' series.

* In a 2012 Shōnen Jump interview, [[Masashi Kishimoto]] stated that [[Chōji Akimichi]] and B were currently his favourite characters in the ''Naruto'' series.

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* B is one of few jinchūriki to survive the extraction of his tailed beast, albeit it came from retaining a piece of Gyūki.

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* Studio Pierrot's Settei sheets of Killer B show that he was 112 cm at age 5, and 122 cm at age 7.

== Quotes ==

== Quotes ==

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* (To [[Suigetsu]]) "''I'm the only one who gets to interrupt me!''"<ref>''Naruto'' chapter 410, page 3</ref>

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* (To [[Suigetsu]]) "''I'm the only one who gets to interrupt me!''"<ref>Chapter 410, page 3</ref>

* (To [[Sasuke]]) {{translation|"''I float… like a butterfly. And sting like a bee! 'Cause I'm the Eight-Tails!''"|蝿…蝶のように蝿.八尾…蜂のように刺す!|Mae… chō no you ni mae. Hachibi… hachi no you ni sasu!}}<ref>''Naruto'' chapter 411, pages 16-17</ref>

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* (To [[Sasuke]]) {{translation|"''I float… like a butterfly. And sting like a bee! 'Cause I'm the Eight-Tails!''"|蝿…蝶のように蝿.八尾…蜂のように刺す!|Mae… chō no you ni mae. Hachibi… hachi no you ni sasu!}}<ref>Chapter 411, pages 16-17</ref>

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* (To [[A]]) "''Becoming a jinchūriki, you can lose a lot, and your heart goes hollow, but if you got things you don't want to lose, they become a light to follow! The tailed beasts aren't our only source of strength! What was inside our hearts '''before''' the monster... shines like a sun, powers us to any length! '''That's''' where our '''true''' power comes from!''"<ref>''Naruto'' chapter 544, pages 3-4</ref>

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* (To [[Fourth Raikage|A]]) "''Becoming a jinchūriki, you can lose a lot, and your heart goes hollow, but if you got things you don't want to lose, they become a light to follow! The tailed beasts aren't our only source of strength! What was inside our hearts '''before''' the monster... shines like a sun, powers us to any length! '''That's''' where our '''true''' power comes from!''"<ref>Chapter 544, pages 3-4</ref>

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* (To A) "''Brother, I'm a big idiot as you said too, and Naruto is as well, right dude? But the ones who accomplish things are the big idiots that don't care about how thick and strong the wall is, yahoo.''"<ref>''Naruto'' chapter 544, page 9</ref>

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* (To A) "''Brother, I'm a big idiot as you said too, and Naruto is as well, right dude? But the ones who accomplish things are the big idiots that don't care about how thick and strong the wall is, yahoo.''"<ref>Chapter 544, page 9</ref>

Killer B (キラービー, Kirābī, Viz: Killer Bee) is a shinobi from Kumogakure. He is the most recent jinchūriki of the Eight-Tails, though, unlike his predecessors, he is able to befriend it and hone its power for Kumo's benefit. Despite being responsible for the village's protection, B aspires to be the world's greatest rapper.

Contents

At a young age, B along with several other children were gathered in order to select a tag partner for A. Out of all the children gathered, B was the only person able to successfully perform the Lightning Release: Double Lariat with A. As such he was given the name "B", and A stated they would be brothers from that day on.[2] Since the age of five, B has been best friends with Motoi, whom he always greeted with a fist bump. After A's cousin, the jinchūriki of Gyūki lost control and killed Motoi's father along with seven other ninja on that day, B was chosen as its next jinchūriki.[3] Soon afterwards, B suffered from similar prejudices against jinchūriki, not too different from that the villagers of Konohagakure and Sunagakure had against Naruto Uzumaki and Gaara respectively. However, he kept smiling and pushed himself to be the best jinchūriki that he could be, so that his brother wouldn't be hurt politically as the Fourth Raikage.[4]

Killer B faces off with Minato Namikaze.

After his father's death, Motoi tried to kill B, believing that B's death would also kill Gyūki and avenge his late father, but B disarmed him easily, and despite the attempt on his life, bore him no ill will, which led Motoi to not speak to B for thirty years out of shame.[5] B would later train with his brother on an island in the Land of Lightning, where there he would find the Falls of Truth. There he learned how to control Gyūki in a amazingly short period of time. Some time after his training, B, alongside A, and other Kumo shinobi confronted Minato Namikaze and his small squad. When Minato moved to counter A's attack, B used a tentacle to push A out of the way, causing shock to the Konoha shinobi that he was Gyūki's jinchūriki. From this encounter Minato would come to have much respect for B and his abilities.[6][7] Some time since then, much like Naruto, B has become beloved in Kumo as the village's hero, or, as Motoi called him, the "Hero of Heroes".[8]

When A became the Raikage, he forbade B from fully transforming into the Eight-Tails and restricted him from leaving the village, saying instead that he would become the guardian of the village and attack from within its walls, to protect him from meeting the same fate as his adoptive father.[9] Sometime later, when B learned from pestering Darui that Konoha and Suna were hosting together an impromptu Chūnin Exams, B saw this as an opportunity to give show for the attenders. A however anticipated his young bother's actions and had Darui and C stop him.[10]

Killer B is very proud of his own power and also very proud of who he is. Like Naruto Uzumaki, who has great overconfidence, Killer B can be quite cocky and stubborn, especially in terms of his own strength, demanding respect from others and asks to be called "Lord Jinchūriki" (人柱力様, Jinchūriki-sama) and his tailed beast be called "Lord Eight-Tails" (八尾様, Hachibi-sama). B has a special way of expressing his pride through song, more specifically in rap-style and tends to use "Bakayarō! Konoyarō!" (「バカヤロー!コノヤロー!) when referring or speaking to others. He will even write his rhymes in the middle of a fight, or during an important meeting, even if they are no good, which is usually the case. He gets his rapping ideas from his opponents in battle. This sometimes causes the people around him to become greatly annoyed by him. B thinks very highly of his rapping skills and doesn't respect anyone who would make fun of rap or his lyrics.

The Raikage has noted that Killer B is not the type of person to work with the strategies created by people and that he would only bring chaos into a battlefield;[11] in his youth he was already seen completing missions, that were supposed to be assigned for both him and his brother, without A's knowledge. The Raikage also notes that he is the only being that B will listen to, as he is able to keep him in check. Despite all this, B knows talent when he sees it, and respects those with it. The primary example is his fellow Kumo jinchūriki, Yugito Nii, who he looked up to for her extreme skills.[12] He had also praised Sasuke Uchiha after their fight, stating he was one of the strongest shinobi he had ever fought. B has a very close relationship with his older brother, the Raikage. According to Motoi, the reason behind him becoming a jinchūriki was for the sake of his brother, even if it meant being shunned by the villagers. He didn't complain, and was always cheerful and determined.

B fist bumping.

Due to the fact that he was confined to the village very soon after his brother assumed office and made the village's guardian,[9] B desperately wished for a vacation and was even ready to fake his capture for one. When the Fourth Raikage, Darui and C learned that B was not captured by Akatsuki, they immediately guessed his intentions and were not surprised by it, though they were very displeased. This lead to him receiving his brother's "Iron Claw" as punishment. B also tends to fist bump with others. This ties into his rapper personality and also serves as a means of communication of sorts, with others without the need to speak.

However, when someone close to him is in danger, Killer B has no qualms about putting himself at risk to save them, if necessary, as seen when he prioritised the safety of his singing master Sabu and his pet, Ponta over confronting Kisame head-on when the Akatsuki confronted his entourage. This caring nature differentiates him from a typical jinchūriki, most of whom are cynical and uncaring towards others due to their circumstances. However, it was hinted that his past as a jinchūriki may not have been unlike Naruto's, since Motoi claimed that being a fellow jinchūriki, B understands what Naruto went through. He has a casual relationship with Gyūki, frequently engaging in friendly conversation with it, even sitting upon its nose when not in combat. He was also completely unaffected by Naruto's Harem Technique, resisting lustful advances and even appearing indifferent.[13] However, he is not completely unaffected by such things, as he noticed Tsunade's chest, which his brother reprimanded him for[14] and he later stared at Yugito's own chest when it was shown during his fight with Tobi's Six Paths.[15] This is later explained as having a preference toward older women, at one point confessing it during the fight against Tobi, much to his tailed beast's surprise and chagrin.

B is also very kind and compassionate, having befriended all the giant animals on the Island Turtle which may indicate that he has a liking for animals, as well as never expressing any ill will towards Motoi who tried to take his life, nor against the villagers who used to shun him.

B is shown to have grown attached to Naruto during their time together. B even wanted to visit Naruto in Konoha after the latter became Hokage even though Gyūki talked him out of it because Naruto has little free time on his hands, unlike B.

Killer B has dark skin and a muscular build, as well as white hair (blond in the anime) and a goatee. On his right shoulder, he has a tattoo of the kanji for "iron" (鉄, tetsu), which is the Iron Armour Seal that was used to seal Gyūki into him, and on his left cheek, he has a tattoo of a bull's horn (correspondingly, Gyūki has horns like a bull, and the left one is partially missing).[16] His top lip also has a slightly darker hue than his bottom one.

Killer B wears oval shaped sunglasses and a white-coloured forehead protector. He also has his village's standard one-strap-over-one-shoulder flak jacket, and a long, red rope belt tied around his waist, the standard Kumo hand and shin guards, shinobi sandals, and a white scarf around his neck. He originally carried seven swords on his back, but now he only carries two swords on his back and stores the rest inside Samehada.

A young Killer B.

As a child, B's hair was much shaggier and he wore a simple suit along with his trademark sunglasses and scarf along with Kumo-nin shin-guards. In his adolescent years, his hair grew much longer and he wore it in a stylised, combed-back manner. In these years he donned the standard uniform of the Kumo-nin inclusive of shirt and started carrying two Supervibrato Lightning Release Swords. As he got older, he started wearing his forehead protector like a bandanna.

Years after the Fourth Shinobi World War, B's attire consisted of an long, dark, sleeveless vest that left his abdomen exposed along with baggy white pants held up by a cord and standard shinobi sandals. His hair had also gotten noticeably longer.

B surpassing his elder brother in strength in a Lightning Release: Lariat clash.

As the guardian of Kumo and a fully-realised jinchūriki, Killer B is an extremely powerful shinobi, capable of overwhelming the entire team Taka single-handedly, and has had his skills praised by several Kumo-nin, including his older brother. Even as a child, B showed promising skill, being able to accomplish missions single-handedly, despite the fact that they should have been executed as a team, with A as his partner.[17] During his time on an island where he trained to control Gyūki's power, B tamed almost all of the island's beasts.[18] A claimed that B had more talent than he did, which was shown when he overpowered his elder brother in a direct Lightning Release: Lariat clash.[19][20] Even Minato praised B's abilities, stating that he was more like a ninja with a great power than simply a jinchūriki.[21]

As a jinchūriki of Gyūki, B has very large and strong levels of chakra, enough to make Samehada get very excited and betray Kisame. B is one of the few people to have achieved full control over a tailed beast as noted by Danzō Shimura,[22] achieving this control with ease at the Falls of Truth, becoming a perfect jinchūriki.[23][24] Like his fellow Kumo-nin, Yugito, B can transform into his tailed beast with great ease in mere seconds and maintain control even in this fully released state. B is the only known, as well as living jinchūriki who can transform at will and remain in his full tailed-beast form indefinitely. Because he has a strong relationship with Gyūki, it can aid B in battle, disturbing his chakra to dispel even genjutsu from a Mangekyō Sharingan, or simply grant B more of its own chakra should B run out himself. Even genjutsu of Itachi Uchiha's calibre are easily broken with this method, with B being able to handily counter attack. This makes B's "control" over Gyūki more of a willing partnership than actual dominance. Despite being forbidden from transforming by his brother, B disregards this due to his undeniable control, either when training or fighting formidable opponents.

Like other jinchūriki, B has the ability to create a chakra cloak by drawing on part of his demon's power, supplementing his own speed and strength. While in Tailed Beast Mode, he can create a Tailed Beast Ball, firing one many times his own size as a long-stretching continuous beam, or even multiple standard-sized balls. B can spin to summon up a great force of wind that can destroy an entire forest with ease. He has shown immense durability using Gyūki's power, able to withstand being burnedmultipletimes, continue fighting after being gored, and even survive his own Tailed Beast Ball.[25] B can also regenerate any of Gyūki's tentacles if they are lost; this ability, however, does not extend to its horns; one of which was cut off by A.

B demonstrating his ability to produce ink.

B's skill with partial transformations is such that he can quickly form all eight tentacles on his back without a cloak, allowing him to intercept fast opponents,[26] or have them burrow through the ground and catch an opponent off guard.[27] His dexterity with these tentacles is able to stack and balance various blocks perfectly.[28] B can transform one of his arms into that of Gyūki's to use for various purposes such as throwing fellow ninja a long distance away or blocking attacks.[29][27][30] Similar to how other jinchūriki obtain physical traits from their inner beast, B is able to produce ink from his mouth, which he mainly uses to write lyrics when he is lacking regular writing tools or to blind his opponent. This ink can be used in a more solid form to make ink clones which immobilise his enemies through wrestling locks. After the opponent is captured, the clones proceed to trap and seal them.

After the full resurrection of Madara Uchiha, the legendary Uchiha successfully extracted Gyūki from B. Despite this, B was able to survive the process by severing one of his partner's tentacles and attaching himself to it, using its chakra as a medium to sustain his life. While unknown how much of B's jinchūriki powers remained at the time, Gyūki was later resealed inside B undoing any problems.

B has immense physical strength and combat prowess, capable of easily fending off all three male members of Taka at once, despite them being dangerous fighters, while still holding back. He also won a sumō match against a giant bear. Killer B's fighting style is similar to that of his brother's, in which they both use wrestling moves instead of standard taijutsu. He can use the Lightning Release: Lariat, which has incredible speed and power, but is rather straightforward. Even as a young boy, he was the only person to successfully perform a Lightning Release: Double Lariat with A, allowing him to become the future Raikage's tag-team partner.[31] By the time of the Fourth Shinobi World War, B's Lightning Release: Lariat has become stronger than that of his brother's, not even needing Gyūki's chakra to overpower him, despite A being at full power.[32]

B has shown remarkably fast reflexes, enough to both intercept Minato's kunai with one of Gyūki's tentacles and counter the latter's surprise attack.[33][34] He could also quickly react to Sasuke's close-range assault by blocking and repelling him with a single move.[35] B is also immensely fast as he could instantly dodge Jūgo's attack him from behind and move to another mountain before Taka even saw he was gone, evading Sasuke's Mangekyō Sharingan and requiring Karin to locate him.[36]

B has shown to be incredibly durable having received a solid kick to the neck from Sasuke only to drop his sword and begin writing lyrics. He also escaped unscathed after being electrocuted by Sasuke's Chidori, and blasted from behind with a powerful punch from Jūgo.[37] He could even take two of A's Lightning Release: Lariats directly to the chest and with no visible damage, one of which being used at his full power.[38]

While originally only carrying two swords when he was young, B has developed his swordplay to an incredible level. Possessing a unique fighting style, B holds his seven blades in between the joints of his arms (left armpit, both elbows), right leg, stomach, the right side of his neck, and in his mouth. As strange as it appears, B is very skilled with this. Because of the unpredictability of his movements, his opponents are easily overwhelmed with all of the varying swings, giving him great versatility very similar to hip-hop dance. B can force his opponents on the defensive with his style and when he finds an opening, B can impale his opponent with most of his swords quickly and simultaneously.

B wielding Samehada.

Neither Suigetsu Hōzuki nor Sasuke, both highly trained swordsmen with the latter also being a Sharingan master, could read his swordplay.[39] Even Itachi Uchiha wasn't able to counter B's Acrobat, being forced to retreat and rely on his Mangekyō Sharingan despite his considerable kenjutsu skill.[40] He is capable of cutting through almost anything when he flows his lightning chakra through his blades. B can also use these blades as mid-range projectiles. By covering himself with Gyūki's chakra, he creates an "Eighth" sword. Even with just two blades, B has highly proficient sword skills, being able to quickly finely slice rocks into various shapes. After obtaining Samehada, B intended to use it as his main weapon. He has integrated Samehada into his fighting style by taking advantage of the sword's ability to 'cut' chakra, allowing him to bisect Itachi's Fire Release: Great Fireball Technique.[41] Samehada and B are capable of working in tandem; while it attacks the enemy on its own, B attacks them from a blind spot.[42] B also uses Samehada to store five of his swords while keeping the other two on hand.

Like most of Kumo shinobi, Killer B can use Lightning Release. However, he also has proficiency in other elements such as Fire Release, Water Release, and Yang Release.[1] With lightning, B has displayed the ability to flowlightning-natured chakra through his blades to increase their cutting power. B's prowess in Lightning Release techniques is so great, he can charge a sharp but weak pencil-point to pierce straight through a large tree trunk and even through the ground. As stated by Kisame, B is able to do this by increasing the vibration frequency of his lightning chakra high enough to surpass the standard penetrative force of Wind Release techniques.[45]

Despite his seemingly carefree nature, Killer B possesses sharp wit, as shown when he used the Body Replacement Technique to switch places with one of Gyūki's tentacle so he could escape Sasuke's Amaterasu. He can also be very persuasive and deceptive, as he quickly turned Naruto's attention away from leaving the Tailed Beast Temple by offering to train him. He also has the ability to interpret someone's "heart" as well as transmit his own feelings merely through touching someone (which is usually done through a fist bump). This ability was first demonstrated when he was training with Naruto in the Tailed Beast Temple, again when Iruka expressed his wishes to protect Naruto to him[46] and when he stopped his brother from attacking Naruto.[47]

While leaving the Valley of Clouds and Lightning after training, B was confronted by Taka. He was immediately attacked by Suigetsu, whose sword B took and used to overpower Jūgo. Sasuke Uchiha then stepped in and used his own sword to take back Suigetsu's. Impressed, B brought out his seven swords and attacked Sasuke, his unorthodox fighting style preventing Sasuke from tracking his movements with his Sharingan. Sasuke tried to gain the upper hand by channelling lightning through his sword, but B did the same with one of his swords, removing the advantage, and plunged the other six into Sasuke's torso, dealing him a critical wound. Before he could finish off Sasuke, Suigetsu and Jūgo came to his defence while Karin retreated with Sasuke and healed him. B was able to damage Suigetsu's sword but Taka was also able to force him back. Sasuke was healed by Karin and the fight continued. B became bored with the fight and tried to leave, but was tracked by Karin.

B vs. Suigetsu.

With escape not an option, B entered his Version 1 form and attacked Taka. Taka was able to elude him and Sasuke caught him in a genjutsu, which Gyūki helped B break out of, allowing B to hit the unaware Sasuke with a Lightning Release: Lariat, blasting a hole in Sasuke's chest, again mortally wounding him. Deciding to finish things off, B fully transformed into his tailed beast. He then fired a Tailed Beast Ball, which Suigetsu was able to protect the rest of Taka from by using himself as a shield.

Sasuke, specially healed by Jūgo, used Amaterasu on B. B rampaged in pain and almost crushed Karin with one of his tentacles. Sasuke severed the tentacle, and B used the opportunity to escape and fake his capture, by substituting with the severed tentacle and leaving behind a decoy. Taka were unaware of this, and delivered "B" to Akatsuki while the real B left the village to go on vacation. While later trying to extract Gyūki from this B's body, Akatsuki discovered that this was a fake.

Free from his confinement to Kumogakure, B sought out Sabu to advance his music career. In the midst of training B was found by Kisame Hoshigaki, who tracked his powerful chakra with his Samehada. While Sabu attacked him, B struck from behind with one of his lightning-imbued swords. Not only was Kisame able to block their attacks with Samehada, but B's lightning disappeared when it makes contact. B entered a Version 1 form and attempts to Headbutt him, but his chakra shroud disappeared too. Sabu realised that Samehada was absorbing B's chakra.

B charges at Kisame with a Version 2 Lightning Release: Lariat.

B entered a seven-tailed Version 1 form and attacked Kisame again but Samehada absorbs most of his chakra. Upon realising that Samehada could only absorb six tails at a time, B entered a Version 2 form and created chakra-bones to use in a more powerful Lightning Release: Lariat. Kisame was badly damaged and Samehada was only able to absorb his Version 2 chakra, returning B to a Version 1 form. Samehada used the chakra it absorbed from B to heal Kisame, who quickly merged with Samehada and created a dome of water around them. B tried to get Sabu and Ponta out of the dome before they drown, but the water dome moved with Kisame. B drew Kisame away from Sabu and Ponta, in order to force him to release them to pursue B. Once they were free, B confronted Kisame, only for Kisame to render all of B's counterattacks ineffective and slowly absorb his chakra all the while.

B and A finish off "Kisame".

When B lost consciousness, Kisame dissipated the water dome. To prevent B from escaping, Kisame tried to cut off his legs with Samehada. However, Samehada had grown fond of B's tailed beast chakra during the battle and betrayed Kisame; in addition to not letting Kisame harm B, it transfered some of the chakra it stole back to him. Kisame kicked it away and tried to cut off B's legs with one of B's own swords, but the Raikage and his bodyguards arrived to stop him, having noticed Kisame's water dome. Samehada continued to replenish B's reserves, allowing B and A to perform Lightning Release: Double Lariat to decapitate Kisame. A then reprimanded B for running away from the village.

When they returned to Kumogakure, B now carrying Samehada, they were greeted by the villagers at the main gate. B's students, Omoi and Karui, ask about Samehada. They and B were unaware that Kisame, having faked his death, was hiding inside Samehada to gather intel on Kumo and the Shinobi Alliance during the meetings B later attended (and didn't pay attention to).

Shortly before the Fourth Shinobi World War began, the Alliance decided to send the remaining jinchūriki to Kumogakure's Island Turtle to hide. B arrived there first, allowing him to defend fellow jinchūriki Naruto Uzumaki from the island's Giant Squid when he arrived. Shortly after this, Naruto approached B for help gaining control of the Nine-Tails. B refused, having noticed an evil within Naruto, and also due to Naruto accidentally insulting his rap. Later, when the squid attacked Motoi, B came to his aid. After the squid was subdued, Motoi asked B why he saved him, despite surely knowing about Motoi's earlier attempt on his life. B's reaction was to act like it had never happened, and did not hesitate to reconcile with Motoi.

B and Motoi reconcile.

After observing the reunion between B and Motoi, Naruto was able to overcome his inner hatred. With it vanquished, B took him to the secret temple behind the Falls of Truth, to allow him to battle the Nine Tails for control of its chakra. When Naruto first opened the seal and released the Nine-Tails, B tried to help him contain it. His abilities were limited while in Naruto's subconscious and he was only able to block a tailed beast ball from the Nine-Tails before being knocked out of the fight. Naruto eventually emerged victorious and communicated all that he went through to B with a fist-bump. Naruto then demonstrated his new control of the Nine-Tails, allowing him to expose Kisame's presence.

Kisame fled with Samehada and B pursued him. Samehada tried to return to B, allowing Kisame an opportunity to absorb his chakra. When he recovered, B flung Might Guy after Kisame. Guy was able to capture him but Kisame committed suicide to prevent the group from interrogating him. They tried to check the intel Kisame had with him, only to be imprisoned while a shark swam away with the intel. B tried to catch the shark after he freed himself, but was unsuccessful. Fearing an imminent Akatsuki attack, the island's animal population was moved indoors. Because Naruto was not to know about the ongoing war, B helped keep Naruto distracted while the other members of the group fought the Akatsuki outside.

To keep Naruto occupied, B started helping him gain control of his new Nine-Tails Chakra Mode, first by having him use his chakra arms to stack blocks in a perfect column. When Naruto mastered this, they moved on to transforming into the Nine-Tails. The Nine-Tails would not cooperate with Naruto on this, leaving him unable to use the Tailed Beast Ball. They instead decided to practice with Naruto's standard techniques to see how the Nine-Tails' chakra affected them. Naruto began with his Rasengan, which B recognised as being based on the Tailed Beast Ball. B encouraged him to focus on mastering the Rasengan in this new form.

During training, Naruto sensed some of the Nine-Tails' chakra elsewhere. B tried to convince him that it was nothing, determined to keep Naruto in the training room so he wouldn't find out about the war. He nevertheless let Naruto leave to go to the bathroom, unaware that it was a lie from Naruto. When Naruto didn't return, B went looking for him, but instead found Iruka Umino, Naruto having found out about the war, and headed off to try and stop it. Iruka requested that B protect Naruto, and after recognising Iruka as a positive influence from fist-bumping with Naruto, B agreed, and went after Naruto. When the Eight Tails protested, B reminded him that they were still training, and stated that real world experience would always be faster than training. He caught up to Naruto and the two teamed up to break through the Self-Repairing Barrier to escape from the island. They then headed for the battlefield.

B intercepts A's attack.

While en route, they were intercepted by A and the Fifth Hokage. B stated he thought Tsunade was attractive. B tried to convince his brother to let them pass, promising to keep Naruto safe from Akatsuki. A was not convinced by his words and, when Naruto promised to use force to escape, the Raikage threatened to kill him. B blocks the latter's attack and informed his brother that he must be willing to kill both of them. A claimed to have no problem with this but B, unbelieving, bumped fists with him to remind him of all they had been through together. B further stated that since A became the Raikage, he has failed to see B's development in strength, and has therefore underestimated him. Still unconvinced, both he and Naruto tried to combat him but struggle doing so as A manages to fight them off. B and A later simultaneously hit each other with their respective Lightning Release: Lariats, with B overpowering his brother. B explained how he overpowered A with his Lightning Release: Lariat; his true strength, along with Naruto's, came from the people that believed in them, not just the beasts inside of them. A eventually pushed B out of the way and activated his Lightning Release Armour again, seemingly intending to kill Naruto. Naruto dodged A, who revealed that he attacked in order to test Naruto. Impressed, he and the Hokage let them pass.

B and Naruto later encountered several shinobi, including F who told B that they were to return to headquarters as back-up. Before he could continue however, Naruto attacked him revealing that F and the other shinobi were transformed enemies much to B's shock. After taking out a few of the clones, B watched on with amazement and pride as Naruto took out the enemy, while noting that in response to Naruto's Tailed Beast Chakra mode the Zetsu were turning into trees in the same manner Yamato's wood creations did at the Tailed Beast Temple. Later while Naruto arrived just in time to save two shinobi from Toroi's onslaught, he had a conversation with one of his fellow Kumo-nin before setting out once again.

B clashes with Itachi.

While en route with Naruto, the two encountered Itachi Uchiha and Nagato.
As the battle commenced suddenly with Itachi being forced to use the Fire Release: Great Fireball Technique, B used Samehada to slice through the attack effectively saving both him and Naruto, although Samehada was unhappy about being used to cut through hot flames. As Itachi appeared behind B suddenly and used the Fire Release: Phoenix Sage Flower Nail Crimson technique, B countered with his transformed arm. B then used the tentacle to grab Itachi, only for him to disappear in a flurry of crows. As Itachi told B not to look into his eyes, Gyūki broke B out of the genjutsu he had already been caught in. He then charged Itachi using his seven swords. Itachi retreated onto Nagato's summoned bird.

B attacks Nagato.

As Itachi activates his Mangekyō Sharingan B tried to stop him by throwing his sword but it was repelled by Nagato. As a result of his Sharingan use, Itachi activated a crow he had stored in Naruto earlier, which was able to free him from Kabuto's control. Itachi, now on Naruto and B's side explained to Naruto and B why the crow had a Mangekyō Sharingan and how he got it. Nagato, after recovering from Itachi's attack and being completely controlled by Kabuto, sneaked behind them with his chameleon summon and used Shinra Tensei to attack Killer B and Naruto. Nagato appeared behind B and tried to attack him, but B went into his Version 2 transformation and countered Nagato's attack with a Lightning Release: Lariat. Nagato used the Preta Path's ability to absorb B's chakra, causing him to regain a youthful appearance.

B attempting to free Naruto.

Seeing Naruto in dire straits with his soul being removed, B moved to attack Nagato. Nagato, sharing vision with his own chameleon summon and the King of Hell, intercepted B by using his Asura Path abilities. Before Nagato could fatally injure B and remove Naruto's soul, they were rescued by Itachi's Susanoo. As Nagato used Chibaku Tensei in an effort to trap them, Itachi told them to attack the centre of the sphere in an attempt to dispel the technique. With the combined force of B's Tailed Beast Ball, Itachi's Yasaka Magatama and Naruto's Wind Release: Rasenshuriken, the sphere was dispelled. B watched on as Itachi's Sword of Totsuka began to seal Nagato who passes on his final words to Naruto, before passing onto the afterlife.

After Itachi claims that he will stop the Summoning: Impure World Reincarnation technique, B voiced his doubts and recalled that they were not able to kill the reincarnated ninja, just seal them. Itachi reminded them again that no matter how infallible a technique may seem, it always had a weak point. As Naruto stated that he would end the war and attempted to create shadow clones he reverted to his normal self, having used up too much of the Nine Tails's chakra. After Itachi told Naruto not to try to shoulder everything himself, B told him that he had made a promise to Iruka to protect him.

B was later scolded by Gyūki for taking too long to urinate and for letting Naruto go ahead of them. When Naruto's clone contacts them mentally, wanting help for fighting the reincarnated Third Raikage, he asked B to let him speak to Gyūki to which B refused while urinating. However, the clone still got to speak to the beast because it could overhear mentally.

B clashes with Blue B on the battlefield.

Later, in the anime, B was met by Motoi, on orders by A to aid B. Soon afterwards, they were met by the surpise appearance of the reincarnated Blue B. To their further surprise, Blue B still possessed the ability to access Gyūki's demon cloak and enter "Version 2" mode. Caught off guard by this, the controlled Blue B launched a Tailed Beast Ball at them. Samehada however acted first and consumed the blast. B then entered "Version 2" and clashed with his predecessor. Not understanding how this is possible, Gyūki asked Blue B how he can still use the demon's power. Blue B explained that his sudden rampage from thirty years ago was in fact orchestrated by Orochimaru who harvested some of Gyūki's severed horn during the chaos. Blue B also explained that the said genetic material was used as a medium to recreate Gyūki's power. Seeing that Blue B's demon powers and immortal body was too much for him to handle alone, B decided to retreat. Motoi tried to help, only to be defeated quickly. Seeing Motoi in trouble, B quickly counterattacked to save his childhood friend. Shocked that B had actually found true friends who accept him for who and what he is, Blue B realised that B had in fact found what Blue B could not to become a fully-realised jinchūki. Happy to see that B had found his own happiness and succeed where he could not, Blue B was able to break the summoning contract and return to the afterlife.[48]

After catching up to Naruto, the two jinchūriki ran into Tobi with his Six Paths of Pain. After a short skirmish with the other jinchūriki, and conversing with Gyūki about the jinchūriki and Yugito's fate, B enquired about the "other Madara" that Naruto was speaking of. Looking on smiling as Naruto told Tobi that it wasn't all bad living with a tailed beast inside them, he declared that he would go first before staring in shock as the other jinchūriki began their tailed beast transformations. Shocked that they still had their tailed beast skills, B attacked Fū head-on nonetheless. After she dodged several of his and Samehada's attacks, Naruto informed him of the shared field of vision that the Six Paths of Pain possessed using the Rinnegan. Catching Naruto, B fled the vicinity after seeing Yugito unleash her Mouse Hairball technique. Clashing with her while escaping, he was able to land a somewhat shallow attack on her that immediately begins repairing. This opportunity however, allowed B to see where Tobi had implanted the chakra receivers in his Six Paths.

B transforms into Gyūki to level the forest.

After Naruto's attempt to destroy the receivers in Rōshi's chest was thwarted, B agreed with Gyūki that the forest was too much of a hindrance for them and transformed into Gyūki to level the entire forest. B immediately moved to seal the revived jinchūriki with his Octopus Hold technique but it was unsuccessful as Tobi caused the jinchūriki to enter Version 2-like states. As they began counter-attacking, B and Naruto tried to fend them off, but began feeling the pressures of fighting six powerful opponents. B was attacked by a fully transformed Han, who gored him with his horns and sent him flying, seemingly knocking him unconscious. After B came to, he asked Gyūki if it was all right to which it replied that they were both wounded. After Tobi lost total control over the Five-Tails and restrained it with a chakra chain, B attempted to crush him within Gyūki's fist, but Tobi simply slipped trough it.

As the Five-Tails was being subdued, B and the Eight-Tails asked Naruto if he had also heard Five-Tails' voice and the Eight-Tails then lamented that seeing other tailed beasts treated that way naturally annoyed the rest of them. While Gyūki and the Nine-Tails were talking telepathically, Naruto suggested using shadow clones to create a diversion and allow them to strike Tobi, B urged Naruto not to as he would die due to the Nine-Tails sucking away his chakra. However, Gyūki revealed that the Nine-Tails had seemingly stopped doing this for some time now due to Naruto's stable condition after using so much of the beasts' chakra. He then got tossed away by a fully transformedRōshi. B was later impressed when Naruto managed to escape Son Gokū's stomach using shadow clones.

After Naruto successfully removed the chakra receiver, B watched on with shock as the beast was resealed into the Demonic Statue of the Outer Path in the blink of an eye. As Naruto rallies, telling the beast and B to get ready, it told him that he and B would be take the front-line while Naruto acted as support because he was still unable to transform into the Nine-Tails. After Naruto told them it would be fine because they were a pair of duos, he wondered whether Kurama had finally come around. As the battle began, to B's astonishment, Naruto assumed the form of his tailed beast before joining the fray. During Naruto's attack, Gyūki stopped the Three-Tails from attacking him, and also repelled another attack from the Five-Tails. After the Three-Tails freed itself from Gyūki's tentacles, they watched on as the five beasts prepared a collaborative Tailed Beast Ball and Naruto prepared to negate the attack with one of his own. As Gyūki wondered if Naruto would be able to do it, B told it that he almost did it during his training, but was sure that Naruto would be able to do it now.

Naruto and Killer B battling the Demonic Statue of the Outer Path.

As the two Tailed Beast Balls collided, B grabbed Rōshi's body and protects himself from the after-effects of the attack as he noted that Naruto hit the base of the other attack allowing it fly into the air. He later congratulated Naruto on freeing the other beasts, before advancing behind Naruto, Guy and Kakashi prepared to fight Tobi directly. Later, as Naruto mocked Tobi with the information he had just learned, B looked on smirking. After the jinchūriki's corpses are enveloped in a light of sorts as the Impure World Reincarnation technique is released, B told Naruto that they had to pick up the pace to compete with Itachi's contribution. He is later seen mobilised beside Naruto, Kakashi and Guy as they prepare to assault Tobi and the Demonic Statue of the Outer Path.

B attacks the statue.

While the shinobi regroup and discuss the gash in Tobi's mask. B uses the opportunity to attack the statue. Moving in with a punch, he declared that the statue was wide open. However, his attack was deflected by Tobi's Uchiha Flame Formation barrier which burned his hand. Telling Naruto that he was okay, B prepared to launch the strategy that Kakashi had developed. Holding all the shinobi in his hands, B threw the trio towards Tobi. When they regroup after Tobi's arm is hit by a seemingly unseen attack, B listened to Kakashi's explanation of Tobi's technique and then enquired if all Space–Time Ninjutsu shared the same dimension. When told no, B told Naruto that it still would not be easy to land an attack on an intangible person. When Kakashi stated that their belief that Tobi was becoming intangible was incorrect, B enquired once again how it was possible for their two Sharingan to share the same dimension. As the battle against Tobi continued Tobi shot multiple stakes at Gyūki and B which are made to bind and suppress a tailed beasts power using his Space–Time Ninjutsu. Incapable of assisting because of the stakes, B is left to observe as Naruto successively breaks Tobi's mask revealing his true identity as Obito Uchiha. When the real Madara arrived to the battlefield, B asked Naruto what this could mean for the Kage, distressed at the possibility of something happening to his brother. When Madara casually disregarded the situation, Naruto used his tails to free him of the stakes, and threw them at the Uchiha, however, Madara easily blocked the stakes with a barrier. Madara then told Obito to handle Kakashi and Might Guy, while he dealt with B and Naruto.

B breaks free from the wooden restraints.

As the battle with Madara ensued, B was seemingly knocked to the ground, leading the beast to comment on Madara's power. When an injured Guy told them that was why Madara was worth fighting, the beast told Guy that he shouldn't be pushing himself so hard. As the battle waged on, he and Guy were restrained by Madara, before the Uchiha can land the finishing blow, he is intercepted by Naruto. After Might Guy's Daytime Tiger sends the legendary ninja flying away from them, B noted that Guy wasn't just acting tough. After breaking free of his constraints, B warned Naruto that the wood could suppress a tailed beast's power before turning his attention to the statue. Forming a collaborative tailed beast ball with Naruto, B fires it at the statue and believed it to be destroyed. Their celebration, however, was cut short when the smoke cleared and the Ten-Tails appeared on the battlefield.

Killer B together with the Allied Shinobi Force.

Asking Kurama if it really wanted to fight that, Gyūki is told that it could not hide from the beast. Handing over Guy as per the fox's request, the two beast were attacked by the Ten-Tails surprising them with its speed. Ending up on either side of the beast, B signals to Gyūki to fire the Continuous Tailed Beast Balls at the beast. When the smoke cleared, Gyūki was nowhere to be seen. It was later revealed, as B announced their strategy, that Kakashi had warped them right above the Ten-Tails to launch a Tailed Beast Ball at point-blank range. The Ten-Tails flicks his Tailed Beast Ball back at him. With B's full transformation now having reached its limit, Gyūki tells B to buy him some time while he generates more chakra to use. As the Ten-Tails fires a Tailed Beast Ball, the attack is misdirected by the timely arrival of the the entire Allied Shinobi Forces.

Killer B clashing Tailed Beast Balls with the Ten-Tails.

With the Alliance having bought enough time, B flew towards the Ten-Tails on the back of one of Sai's birds with his chakra now replenished. As the beast prepared to launch a Tailed Beast Ball towards the shinobi, B transformed into the Eight-Tails and prepared a Tailed Beast Ball of his own. Recklessly stuffing Gyūki's head into the beast's mouth, B was able to stop the attack as well as harm the Ten-Tails as both Tailed Beast Balls detonated inside it. Casting aside Omoi's words of caution, he noted that when it came to protecting everyone he was fearless.

With the chakra shrouds protecting them dissipated, Naruto being healed, and Kurama kneading more chakra, B and Gyūki announced that it was time for them to take centre-stage once again to buy the duo some time to recover as Gyūki noted that the Ten-Tails would become unstoppable if it underwent its final transformation. With Shikamaru's strategy initiated, and the shinobi begin to construct earthen — albeit feeble — defences, B intercedes and attempted to throw the attack off-trajectory. However, with none of their combined efforts seemingly working, and the situation looking dire, the Alliance is saved by the arrival of the Fourth Hokage, unbeknownst to them as B looked on puzzled that the attacked had seemingly just vanished.

As Obito emerged within the barrier some time later after sealing the beast inside himself, B asked Gyūki whether or not that was the beast's final form. Gyūki told him that it was not and that from all appearances, it seemed that the beast had been sealed before reaching its final form. With the situation later turning grim as the Alliance was trapped in a barrier with a Tailed Beast Ball-firing tree, B and the other shinobi soon found themselves shrouded in the previous Version 1 mantles again. He noted to Gyūki that it must have also felt Kurama's Yin and Yang halves merge. He and the others subsequently found themselves on the outside of the barrier, escaping the near-fatal attack thanks to Naruto and Minato's action.

When Obito later extracted the Ten-Tails which begin transforming into a giant tree, Gyūki informed B that the Ten-Tails had assumed its true and final form. As the roots of the tree chased B down who complained about the volume of roots that had come after him alone, Gyūki noted that it was more than likely because the tree sensed that he had more chakra than the other shinobi. Ultimately, while worn out, B with Samehada's aid was able to destroy the roots that had confronted him.

B and the Allied Forces take back the tailed beasts' chakra.

When the Kage re-entered the battlefield and A made his way over to where B was and exclaimed that they should get ready to fight, an excited B noted that it was time for the Lightning Release: Double Lariatduo to fight. After Naruto and Sasuke combine their power, landing a critical hit on Obito and weakening his hold on the Ten-Tails, Naruto begins to use the accumulated chakra he got from the other tailed beast to remove the Ten-Tails from Obito. Because Naruto doesn't have any of Shukaku nor Gyūki's chakra, Naruto was unable to succeed. Killer B and Gaara joined in to aid Naruto and drag their respective tailed beast's chakra out of Obito, stopping the flower atop the tree from blooming.

Though successful in their venture and as Obito lay defeated, a new threat reared its head against the extracted tailed beasts: a revived Madara Uchiha. Reuniting with the other tailed beasts after having evacuated the wounded shinobi to a safe location, the Uchiha was able to bind the beasts with the Demonic Statue Chains and began dragging them towards the statue which he had extracted from Obito. Struggling against his confines, as he is dragged ever closer to the looming threat, B severed one of his tentacles. Gyūki apologises to B as it is extracted and sealed within the statue along with the other tailed beasts.

After surviving the tailed beast extraction, B falls victim to the Infinite Tsukuyomi.

Despite having suffered the extraction of his tailed beast, B was later shown to have survived by using the chakra of Gyūki's previously severed tail. Later, with Madara having succeeded in obtaining the Rinnegan power of both his eyes and becoming the Ten-Tails' jinchūriki, the revived Uchiha finally cast Infinite Tsukuyomi, shocking B.

Two years after the war and when the Moon begins to draw closer to the Earth, Killer B and his brother use a special chakra weapon to destroy the fragments heading to the planet. During Naruto's fight with Toneri, A instructs B to destroy the Moon to ensure it does not fall to them once the hour time limit is up. B refuses stating he will not kill Naruto and his friends. Luckily, Naruto defeated Toneri and stopped the Moon in time. He was last seen at Naruto and Hinata's wedding, bumping fists with Naruto.

Main article: Naruto the Movie: Blood PrisonA had B summoned following a failed attempt on his life by an assassin disguised as Naruto Uzumaki, and sent to the aid of the real one at the Hōzuki Castle. When he arrived, B saved Naruto's life from Satori's attack and repelled the beast with a punch, before engaging it with the other allies sent as backup. After Satori was eventually defeated, B lifted the Box of Ultimate Bliss and dropped it in the ocean, before going home.

Masashi Kishimoto in a 2012 Shōnen Jump interview, stated that one of his past editors who really likes pro wrestling greatly influenced his decision to create a character that — even though he was a shinobi — used pro wrestling moves as part of his techniques. He also stated that he wanted to make him into an interesting character and one of the most powerful shinobi in the series. Kishimoto went on to say that he has trouble writing B's lines at times because he always wants them to rhyme due to his rapping style.

His name is a reference to the famed rap group, the Wu-Tang Clan, often referred to as the "Killer Bees".

Though it is unconfirmed, in his flashbacks in the manga, Killer B was only ever referred to as B until his confrontation with Minato, where B is praised as a "killer shinobi". Since then B has been known as Killer B, suggesting that it was Minato who bestowed him the title "Killer".

Bī is the Japanese pronunciation of the letter "B" (as well as the Japanese pronunciation of "Bee"). This parallels the names of other Kumogakure shinobi such as F and J for example.

During a fierce battle with Taka, B quoted Muhammad Ali's famous line, "float like a butterfly, sting like a bee".[49]

Killer B makes various references to bees. This is a pun on the number of tails his tailed beast has. Eight in Japanese is hachi (八), a homophone to the Japanese word for bee, hachi (蜂).

Though not confirmed, Killer B was given the name of Kira Hachi by fans. It comes from the word "Kirābī" incorrectly translated into Japanese (Hachi is the Japanese word for "bee", as well as "Eight". Kira is a loanword of the English "killer"). Kira Hachi, can be translated to "Killer Eight", following the homophone of bee.

In chapter 542, when A and B face off against several Iwagakure shinobi while on a mission,[50] B is first depicted with longer hair and looks a bit older. However, in subsequent panels his hair is once again short and spiky and looks much younger.[51] Oddly, this was not corrected in the tankōbon.

(To Sasuke) "I float… like a butterfly. And sting like a bee! 'Cause I'm the Eight-Tails!" (蝿…蝶のように蝿.八尾…蜂のように刺す!, Mae… chō no you ni mae. Hachibi… hachi no you ni sasu!)[54]

(To A) "Becoming a jinchūriki, you can lose a lot, and your heart goes hollow, but if you got things you don't want to lose, they become a light to follow! The tailed beasts aren't our only source of strength! What was inside our hearts before the monster... shines like a sun, powers us to any length! That's where our true power comes from!"[55]

(To A) "Brother, I'm a big idiot as you said too, and Naruto is as well, right dude? But the ones who accomplish things are the big idiots that don't care about how thick and strong the wall is, yahoo."[56]